CN-122029914-A - Terminal, base station and communication method

Abstract

The terminal includes a control unit that determines a specific bandwidth part in a frequency band in which resources of a plurality of component carriers are bundled as a bandwidth part in a specific component carrier of the plurality of component carriers, and a communication unit that performs communication using the specific bandwidth part.

Inventors

• Genyoko Okano
• YOSHIOKA SHOHEI
• NAGATA AKIRA

Assignees

• 株式会社NTT都科摩

Dates

Publication Date

20260512

Application Date

20240119

Claims (5)

1. 1. A terminal is provided with: a control unit that determines a specific bandwidth part in a frequency band in which resources of a plurality of component carriers are bundled as a bandwidth part in a specific component carrier of the plurality of component carriers, and And a communication unit that performs communication using the specific bandwidth portion.
2. 2. The terminal of claim 1, wherein, The specific bandwidth portion is an initial BWP or a default BWP.
3. 3. The terminal of claim 1, wherein, The control part Determining the component carrier of the P (S) cell as the specific component carrier, or Deciding the specific component carrier based on notification from the base station, or Determining the specific component carrier based on the downlink measurement result, or Deciding the specific component carrier based on the index, or And determining the component carrier of the signal received in the initial access as the specific component carrier.
4. 4. A base station, comprising: a control unit that determines a specific bandwidth part in a frequency band in which resources of a plurality of component carriers are bundled as a bandwidth part in a specific component carrier of the plurality of component carriers, and And a communication unit that performs communication using the specific bandwidth portion.
5. 5. A communication method performed by a terminal, comprising the steps of: Determining a specific bandwidth part in a frequency band binding resources of a plurality of component carriers as the bandwidth part in the specific component carrier of the plurality of component carriers, and The communication is performed using the particular bandwidth portion.

Description

Terminal, base station and communication method Technical Field The present invention relates to a terminal, a base station, and a communication method in a wireless communication system. Background In NR (New Radio: new air interface) which is a subsequent system of LTE (Long Term Evolution: long term evolution) (also referred to as "5G"), a technology of satisfying a high-capacity system, a high-speed data transmission rate, a low delay, simultaneous connection of a plurality of terminals, a low cost, power saving, and the like which are requirements is being studied (for example, non-patent document 1). In addition, in NR, a carrier aggregation (CA: carrier Aggregation) function using a wideband in order to secure data resources is still studied after LTE. In the carrier aggregation function, a plurality of component carriers (CC: component Carrier) are bundled to ensure a broadband data resource. Prior art literature Non-patent literature Non-patent document 1:3GPP TS 38.300 V18.0.0 (2023-12) Disclosure of Invention Problems to be solved by the invention In future systems (e.g., NR version 18 and 6G, which is the successor to NR), more flexible and efficient resource allocation may be required. However, in the conventional carrier aggregation function, it is necessary to schedule data resources for each of the plurality of bundled component carriers, and there is a problem in that the overhead of resource allocation is large. In response to this problem, a technique of bundling resources using a plurality of component carriers has been proposed. However, in the technique of bundling resources using a plurality of component carriers, an operation related to a specific bandwidth portion such as initial BWP (initial BWP) is not clear. Therefore, in the conventional technique, when bundling resources using a plurality of component carriers, there is a possibility that an operation related to a specific bandwidth portion cannot be performed appropriately. The present invention has been made in view of the above-described problems, and an object thereof is to provide a technique capable of appropriately performing an operation related to a specific bandwidth portion when bundling resources using a plurality of component carriers. Means for solving the problems According to the disclosed technology, a terminal is provided with a control unit that determines a specific bandwidth part in a frequency band in which resources of a plurality of component carriers are bundled as a bandwidth part in a specific component carrier of the plurality of component carriers, and a communication unit that communicates using the specific bandwidth part. Effects of the invention According to the disclosed technology, a technology is provided that can appropriately perform an action related to a specific bandwidth portion in the case of bundling resources that utilize a plurality of component carriers. Drawings Fig. 1 is a diagram for explaining a radio communication system according to an embodiment of the present invention. Fig. 2 is a diagram for explaining a radio communication system according to an embodiment of the present invention. Fig. 3 is a 1 st view showing an example of the configuration of a virtual CC according to the embodiment of the present invention. Fig. 4 is a 2 nd view showing an example of the configuration of a virtual CC according to the embodiment of the present invention. Fig. 5 is a diagram for explaining basic operations according to the embodiment of the present invention. Fig. 6 is a diagram showing an example of a BWP setting method. Fig. 7 is a diagram showing an example of a BWP setting method. Fig. 8 is a diagram showing an example of a BWP setting method. Fig. 9 is a diagram showing an example of a functional configuration of a base station according to an embodiment of the present invention. Fig. 10 is a diagram showing an example of a functional configuration of a terminal according to an embodiment of the present invention. Fig. 11 is a diagram showing an example of a hardware configuration of a base station or a terminal according to an embodiment of the present invention. Fig. 12 is a diagram showing an example of a structure of a vehicle according to an embodiment of the present invention. Detailed Description Hereinafter, embodiments of the present invention will be described with reference to the drawings. The embodiments described below are examples, and the embodiments to which the present invention is applied are not limited to the following embodiments. In the operation of the wireless communication system according to the embodiment of the present invention, the conventional technology is appropriately used. Wherein the prior art is for example, but not limited to, existing LTE or existing NR. In the embodiment of the present invention described below, terms such as SS (Synchronization signal: synchronization signal), PSS (PRIMARY SS: primary synchronization signal), SSs (Secondar