CN-116709522-B - Apparatus and method for supporting ultra wide bandwidth in fifth generation new radio

Abstract

Methods, and systems are provided in which a fifth generation (5G) communication system supporting higher data transfer rates after a fourth generation (4G) system fuses with internet of things (IoT) technology. A method performed by a terminal in a wireless communication system includes receiving a radio resource control, RRC, message from a base station, the RRC message including a configuration of at least one frequency band and a configuration of a primary frequency band for the terminal, wherein the configuration of the at least one frequency band includes at least one of a subcarrier spacing, a cyclic prefix, and information regarding a frequency domain location and a bandwidth of the at least one frequency band, monitoring a control channel on the primary frequency band from the base station, and receiving downlink control information indicating an active frequency band of the at least one frequency band from the base station based on the control channel.

Inventors

• Pu Chengxun
• ZHENG DINGSHOU
• Liu Shanji
• Zheng Bingxun

Assignees

• 三星电子株式会社

Dates

Publication Date

20260508

Application Date

20171031

Priority Date

20161103

Claims (15)

1. 1. A method performed by a terminal in a wireless communication system, the method comprising: Receiving a radio resource control, RRC, message from a base station, the RRC message comprising a configuration of at least one frequency band and a configuration of a primary frequency band for a terminal, wherein the configuration of the at least one frequency band comprises at least one of a subcarrier spacing, a cyclic prefix, and information on a frequency domain location and a bandwidth of the at least one frequency band; Monitoring control channels on a primary frequency band from a base station, and Downlink control information indicating an active frequency band of the at least one frequency band is received from the base station based on the control channel.
2. 2. The method of claim 1, wherein receiving downlink control information comprises: Identifying a primary frequency band based on the configuration of the primary frequency band; receiving downlink control information from the base station indicating an active frequency band of the at least one frequency band, and From the primary band to the active band according to the downlink control information.
3. 3. The method of claim 1, further comprising: in case the predetermined timer expires, a switch is made from the active band to the recovery band.
4. 4. The method of claim 1, further comprising: performing communication with a base station based on an active frequency band, and Wherein the configuration of the at least one frequency band further comprises at least one frequency band identifier corresponding to the at least one frequency band, and Wherein the at least one frequency band comprises at least one of at least one downlink frequency band or at least one uplink frequency band.
5. 5. A method performed by a base station in a wireless communication system, the method comprising: Transmitting a radio resource control, RRC, message to the terminal, the RRC message including a configuration of at least one frequency band and a configuration of a primary frequency band for the terminal, wherein the configuration of the at least one frequency band includes at least one of a subcarrier spacing, a cyclic prefix, and information about a frequency domain location and a bandwidth of the at least one frequency band, and Downlink control information indicating an active frequency band of the at least one frequency band is transmitted to the terminal based on the control channel on the primary frequency band.
6. 6. The method of claim 5, wherein the active frequency band is switched to the recovery frequency band upon expiration of a predetermined timer.
7. 7. The method of claim 5, wherein the primary frequency band is identified based on a configuration of the primary frequency band, and The primary frequency band is switched to the active frequency band according to the downlink control information.
8. 8. The method of claim 5, further comprising: performing communication with a terminal based on an active frequency band, and Wherein the configuration of the at least one frequency band further comprises at least one frequency band identifier corresponding to the at least one frequency band, and Wherein the at least one frequency band comprises at least one of at least one downlink frequency band or at least one uplink frequency band.
9. 9. A terminal in a wireless communication system, the terminal comprising: Transceiver, and A controller coupled with the transceiver and configured to: Receiving a radio resource control, RRC, message from a base station, the RRC message comprising a configuration of at least one frequency band and a configuration of a primary frequency band for a terminal, wherein the configuration of the at least one frequency band comprises at least one of a subcarrier spacing, a cyclic prefix, and information on a frequency domain location and a bandwidth of the at least one frequency band; Monitoring control channels on a primary frequency band from a base station, and Downlink control information indicating an active frequency band of the at least one frequency band is received from the base station based on the control channel.
10. 10. The terminal of claim 9, wherein the controller is further configured to: Identifying a primary frequency band based on the configuration of the primary frequency band; receiving downlink control information from the base station indicating an active frequency band of the at least one frequency band, and From the primary band to the active band according to the downlink control information.
11. 11. The terminal of claim 9, wherein the controller is further configured to: in case the predetermined timer expires, a switch is made from the active band to the recovery band.
12. 12. The terminal of claim 9, wherein the controller is further configured to: performing communication with a base station based on an active frequency band, and Wherein the configuration of the at least one frequency band further comprises at least one frequency band identifier corresponding to the at least one frequency band, and Wherein the at least one frequency band comprises at least one of at least one downlink frequency band or at least one uplink frequency band.
13. 13. A base station in a wireless communication system, the base station comprising: Transceiver, and A controller coupled with the transceiver and configured to: Transmitting a radio resource control, RRC, message to the terminal, the RRC message including a configuration of at least one frequency band and a configuration of a primary frequency band for the terminal, wherein the configuration of the at least one frequency band includes at least one of a subcarrier spacing, a cyclic prefix, and information about a frequency domain location and a bandwidth of the at least one frequency band, and Downlink control information indicating an active frequency band of the at least one frequency band is transmitted to the terminal based on the control channel on the primary frequency band.
14. 14. The base station of claim 13, wherein the active frequency band is switched to the recovery frequency band upon expiration of a predetermined timer, and Wherein the primary frequency band is identified based on a configuration of the primary frequency band, and switching the primary frequency band to the active frequency band according to the downlink control information.
15. 15. The base station of claim 13, wherein the controller is further configured to: performing communication with a terminal based on an active frequency band, and Wherein the configuration of the at least one frequency band further comprises at least one frequency band identifier corresponding to the at least one frequency band, and Wherein the at least one frequency band comprises at least one of at least one downlink frequency band or at least one uplink frequency band.

Description

Apparatus and method for supporting ultra wide bandwidth in fifth generation new radio The application is a divisional application of patent application of application with the application date of 2017, 10, 31, 201780067861.3 and the name of 'device and method for supporting ultra-wide bandwidth in a new radio of the fifth generation (5G'). Technical Field The present disclosure relates to physical layer (PHY)/Medium Access Control (MAC) layer operations of terminals and base stations in a mobile communication system. More particularly, the present disclosure relates to a method and apparatus capable of efficiently using bandwidth and flexibly and dynamically supporting bandwidth change, because when a base station attempts to transmit/receive ultra-wide bandwidth signals to/from a single carrier, signal transmission/reception can be achieved only in a limited bandwidth due to limited operation bandwidth and power consumption of a terminal. Background In order to meet the demand for radio data traffic (traffic) which has been in an increasing trend since the commercialization of the fourth generation (4G) communication system, efforts have been made to develop an improved fifth generation (5G) communication system or 5G pre-communication system. For this reason, the 5G communication system or 5G pre-communication system is called a super 4G network communication system or a Long Term Evolution (LTE) after-system. In order to achieve high data transfer rates, 5G communication systems are considered to be implemented in very high frequency (millimeter wave) bands, such as, for example, the 60GHz band. In order to mitigate path loss of radio waves and increase transmission distance of radio waves in very high frequency bands, in 5G communication systems, beam forming, massive MIMO, full-dimensional MIMO (FD-MIMO), array antennas, analog beam forming, and massive antenna techniques have been discussed. In addition, in order to improve the network of the system, in the 5G communication system, technologies such as evolved small cell, advanced small cell, cloud radio access network (cloud RAN), ultra dense network, device-to-device communication (D2D), wireless backhaul, mobile network, cooperative communication, coordinated multipoint (CoMP), and received interference cancellation have been developed. In addition to this, in the 5G system, hybrid FSK and QAM modulation (FQAM) and Sliding Window Superposition Coding (SWSC) as Advanced Coding Modulation (ACM) schemes, and filter group multicarrier (FBMC), non-orthogonal multiple access (NOMA), sparse Code Multiple Access (SCMA), and the like have been developed. Meanwhile, the internet has evolved from a human-centric connection network through which humans generate and consume information to an internet of things (IoT) network, which transmits/receives information between distributed components such as things and processes the information. Internet of everything (IoE) technology has also emerged that combines big data processing technology and the like with IoT technology through a connection with a cloud server and the like. In order to implement IoT, technical elements such as sensing technology, wired and wireless communication and network infrastructure, service interface technology, and security technology have been required. Recently, technologies such as sensor networks, machine-to-machine (M2M), and Machine Type Communication (MTC) for connection between things have been studied. In an IoT environment, intelligent Internet Technology (IT) services may be provided that create new value in human life by collecting and analyzing data generated in connected things. IoT may be suitable for applications such as smart homes, smart buildings, smart cities, smart cars or networked cars, smart grids, healthcare, smart appliances, and advanced healthcare services by fusing and combining existing Information Technology (IT) with various industries. Accordingly, various attempts have been made to apply 5G communication systems to IoT networks. For example, 5G communication technologies such as sensor networks, M2M, and MTC have been implemented by technologies such as beamforming, MIMO, and array antennas. As an example of a fusion of 5G communication technology and IoT technology, applications of the cloud radio access network (cloud RAN) as described above as big data processing technology may also be considered. Existing LTE systems have employed a multi-carrier scheme in which multi-Component Carriers (CCs), such as Carrier Aggregation (CA) and Dual Connectivity (DC), are bundled and operated to support broadband. Aggregating up to 32 CCs may support 640MHz bandwidth on a 20MHz CC basis. But if a scheme such as LTE CA is applied to support ultra-wide bandwidth, e.g., 1GHz in a 5G New Radio (NR) system, the number of combinations of CCs to be used by a terminal increases exponentially, the size of UE capability reports increases, and the 5G NR system can only opera