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EP-4236175-B1 - METHOD AND APPARATUS OF DETERMINING FREQUENCY RESOURCES IN NEXT GENERATION CELLULAR NETWORKS

EP4236175B1EP 4236175 B1EP4236175 B1EP 4236175B1EP-4236175-B1

Inventors

  • XUE, Peng
  • YUN, Yeohun
  • RYU, HYUNSEOK
  • YU, HYUNKYU

Dates

Publication Date
20260506
Application Date
20180810

Claims (15)

  1. A method performed by a terminal in a wireless communication system, the method comprising: receiving, from a base station, a synchronization signal, SS, block (610a, 610b); receiving, from the base station, first information on a reference point associated with resource block grids; and identifying second information on a subcarrier offset between a lowest subcarrier of the SS block and a lowest subcarrier of a lowest resource block which overlaps with the SS block, wherein resource blocks of the resource block grids are indexed from 0 and upwards in the frequency domain for a subcarrier spacing configuration based on the reference point.
  2. The method of claim 1, further comprising: receiving, from the base station, third information for determining a frequency domain location of a bandwidth part, BWP, wherein the third information includes an offset between the reference point and a starting resource block of the BWP.
  3. The method of claim 1, further comprising: receiving, from the base station, information on a frequency location of a reference point for uplink as an absolute radio frequency channel number, ARFCN.
  4. The method of claim 1, further comprising: receiving, from the base station, information indicating an absolute radio frequency channel number, ARFCN, for a carrier associated with a secondary cell.
  5. The method of claim 1, further comprising: identifying a reference subcarrier spacing defined per each of a first frequency range and a second frequency range, wherein the reference subcarrier spacing is associated with the SS block, and wherein the reference subcarrier spacing is assumed for indicating an offset from a lower frequency edge in a carrier.
  6. A terminal in a wireless communication system, the terminal comprising: a transceiver (2510) configured to receive and transmit signals; and a controller (2520) coupled with the transceiver and configured to: control the transceiver to receive, from a base station, a synchronization signal, SS, block (610a, 610b), control the transceiver to receive, from the base station, first information on a reference point associated with resource block grids, and identify second information on a subcarrier offset between a lowest subcarrier of the SS block and a lowest subcarrier of a lowest resource block which overlaps with the SS block, wherein resource blocks of the resource block grids are indexed from 0 and upwards in the frequency domain for a subcarrier spacing configuration based on the reference point.
  7. The terminal of claim 6, wherein the controller is further configured to: control the transceiver to receive, from the base station, third information for determining a frequency domain location of a bandwidth part, BWP, wherein the third information includes an offset between the reference point and a starting resource block of the BWP.
  8. The terminal of claim 6, wherein the controller is further configured to: identify a reference subcarrier spacing defined per each of a first frequency range and a second frequency range, wherein the reference subcarrier spacing is associated with the SS block, and wherein the reference subcarrier spacing is assumed for indicating an offset from a lower frequency edge in a carrier.
  9. A method performed by a base station in a wireless communication system, the method comprising: transmitting, to a terminal, a synchronization signal, SS, block (610a, 610b); transmitting, to the terminal, first information on a reference point associated with resource block grids; and transmitting, to the terminal, second information on a subcarrier offset between a lowest subcarrier of the SS block and a lowest subcarrier of a lowest resource block which overlaps with the SS block, wherein resource blocks of the resource block grids are indexed from 0 and upwards in the frequency domain for a subcarrier spacing configuration based on the reference point.
  10. The method of claim 9, further comprising: transmitting, to a terminal, third information for determining a frequency domain location of a bandwidth part, BWP, wherein the third information includes an offset between the reference point and a starting resource block of the BWP.
  11. The method of claim 9, further comprising: transmitting, to a terminal, information on a frequency location of a reference point for uplink as an absolute radio frequency channel number, ARFCN.
  12. The method of claim 9, further comprising: transmitting, to a terminal, information indicating an absolute radio frequency channel number, ARFCN, for a carrier associated with a secondary cell.
  13. The method of claim 9, wherein a reference subcarrier spacing is defined per each of a first frequency range and a second frequency range, wherein the reference subcarrier spacing is associated with the SS block, and wherein the reference subcarrier spacing is assumed for indicating an offset from a lower frequency edge in a carrier.
  14. A base station in a wireless communication system, the base station comprising: a transceiver (2610) configured to receive and transmit signals; and a controller (2620) coupled with the transceiver and configured to: control the transceiver to transmit, to a terminal, a synchronization signal, SS, block (610a, 610b), control the transceiver to transmit, to the terminal, first information on a reference point associated with resource block grids, and control the transceiver to transmit, to the terminal, second information on a subcarrier offset between a lowest subcarrier of the SS block and a lowest subcarrier of a lowest resource block which overlaps with the SS block, wherein resource blocks of the resource block grids are indexed from 0 and upwards in the frequency domain for a subcarrier spacing configuration based on the reference point.
  15. The base station of claim 14, wherein a reference subcarrier spacing is defined per each of a first frequency range and a second frequency range, wherein the reference subcarrier spacing is associated with the SS block, and wherein the reference subcarrier spacing is assumed for indicating an offset from a lower frequency edge in a carrier.

Description

[Technical Field] The disclosure relates to a method and an apparatus for receiving/transmitting data in a cellular network. More particularly, the disclosure relates to the frequency resource and PRB index determination in next generation cellular networks. [Background Art] To meet the demand for wireless data traffic having increased since deployment of fourth generation (4G) communication systems, efforts have been made to develop an improved fifth generation (5G) or pre-5G communication system. Therefore, the 5G or pre-5G communication system is also called a 'beyond 4G network' or a 'post long term evolution (LTE) System'. The 5G wireless communication system is considered to be implemented not only in lower frequency bands but also in higher frequency (mmWave) bands, e.g., 10 GHz to 100 GHz bands, so as to accomplish higher data rates. To mitigate propagation loss of the radio waves and increase the transmission distance, the beamforming, massive multiple-input multiple-output (MIMO), full dimensional MIMO (FD-MIMO), array antenna, an analog beam forming, and large scale antenna techniques are being considered in the design of the 5G wireless communication system. In addition, in 5G communication systems, development for system network improvement is under way based on advanced small cells, cloud radio access networks (RANs), ultra-dense networks, device-to-device (D2D) communication, wireless backhaul, moving network, cooperative communication, coordinated multi-points (CoMP), reception-end interference cancellation and the like. In the 5G system, hybrid frequency shift keying (FSK) and quadrature amplitude modulation (QAM) (FQAM) and sliding window superposition coding (SWSC) as an advanced coding modulation (ACM), filter bank multi carrier (FBMC), non-orthogonal multiple access (NOMA), and sparse code multiple access (SCMA) as an advanced access technology have been developed. The Internet, which is a human centered connectivity network where humans generate and consume information, is now evolving to the internet of things (IoT) where distributed entities, such as things, exchange and process information without human intervention. The Internet of everything (IoE), which is a combination of the IoT technology and the big data processing technology through connection with a cloud server, has emerged. As technology elements, such as "sensing technology", "wired/wireless communication and network infrastructure", "service interface technology", and "security technology" have been demanded for IoT implementation, a sensor network, a machine-to-machine (M2M) communication, machine type communication (MTC), and so forth have been recently researched. Such an IoT environment may provide intelligent Internet technology services that create a new value to human life by collecting and analyzing data generated among connected things. IoT may be applied to a variety of fields including smart home, smart building, smart city, smart car or connected cars, smart grid, health care, smart appliances and advanced medical services through convergence and combination between existing information technology (IT) and various industrial applications. In line with this, various attempts have been made to apply 5G communication systems to IoT networks. For example, technologies, such as a sensor network, MTC, and M2M communication may be implemented by beamforming, MIMO, and array antennas. Application of a cloud RAN as the above-described big data processing technology may also be considered to be as an example of convergence between the 5G technology and the IoT technology. In the recent years several broadband wireless technologies have been developed to meet the growing number of broadband subscribers and to provide more and better applications and services. The second generation (2G) wireless communication system has been developed to provide voice services while ensuring the mobility of users. The third generation (3G) wireless communication system supports not only the voice service but also data service. The 4G wireless communication system has been developed to provide high-speed data service. However, the 4G wireless communication system suffers from lack of resources to meet the growing demand for high speed data services. Therefore, the 5G wireless communication system is being developed to meet the growing demand of various services with diverse requirements, e.g., high speed data services, ultra-reliability, low latency applications and massive machine type communication. Due to the widely supported services and various performance requirements, there is high potential that the user equipment (UE) may have different capabilities, e.g., in terms of supported UE bandwidth (BW). Flexible UE bandwidth support needs to be considered in the design of 5G network, and the flexible network access for UEs with different bandwidth capabilities. In the 4G LTE networks, flexible system bandwidth is supported (e.g., 1.4MH