US-12628144-B2 - Bandwidth configuration for narrowband communications

US12628144B2US 12628144 B2US12628144 B2US 12628144B2US-12628144-B2

Abstract

Wireless communications techniques are disclosed, specifically for narrowband communication. One example method includes determining, by a network device, a first bandwidth for narrowband communication, wherein the first bandwidth is less than or equal to a default bandwidth. For example, the default bandwidth may be 5 MHz while narrowband communications operate over a smaller bandwidth, such as 3 or 3.6 MHz. The method further includes transmitting, to a wireless device, information indicative of the first bandwidth. In some implementations, determining the first bandwidth includes determining a starting location and a number of set of consecutive resource blocks, where the set of consecutive resource blocks are included in a control resource set for Type0 Physical Downlink Control Channel Common Search Space (CORESET 0) bandwidth or a Synchronization Signal Block (SSB) bandwidth.

Inventors

Kai Xiao
Xing Liu
Jing Shi
Xianghui Han
Shuaihua Kou

Assignees

ZTE CORPORATION

Dates

Publication Date: 20260512
Application Date: 20231208

Claims (12)

1 . A method of wireless communication comprising: determining, by a network device, a first bandwidth for a wireless device to perform narrowband communication, wherein the first bandwidth is less than or equal to a default bandwidth, wherein the default bandwidth is greater than or equal to 5 MHz, and wherein the first bandwidth is determined based on a location of a set of consecutive resource units and a number of resource units of the set of consecutive resource units; and transmitting, to the wireless device, information indicative of the first bandwidth; wherein the set of consecutive resource units is included in a control resource set for a Type0 Physical Downlink Control Channel Common Search Space (CORESET 0) bandwidth or a Synchronization Signal Block (SSB) bandwidth; and wherein at least a portion of the CORESET 0 bandwidth or at least a portion the SSB bandwidth is punctured, and wherein the set of consecutive resource units corresponds to frequency resources of the CORESET 0 bandwidth that are not punctured.
2 . The method of claim 1 , further comprising: configuring a CORESET 0 bandwidth to be smaller than the default bandwidth, wherein the set of consecutive resource units are included in the CORESET 0 bandwidth.
3 . The method of claim 1 , wherein the information indicative of the first bandwidth is carried by a master information block (MIB) or radio resource control (RRC) signaling, and wherein the information indicative of the first bandwidth includes at least one of: a location of a starting resource unit of the set of consecutive resource units, a location of an ending resource unit of the set of consecutive resource units, the number of resource units, an index corresponding to the location of the starting resource unit and the number of resource units, or an index corresponding to the location of the starting resource unit and the location of the ending resource unit.
4 . A method of wireless communication comprising: receiving, by a wireless device from a network device, information indicative of a first bandwidth for performing narrowband communication, wherein the first bandwidth is less than or equal to a default bandwidth, wherein the default bandwidth is greater than or equal to 5 MHz, and wherein the first bandwidth is determined based on a location of a set of consecutive resource units and a number of resource units of the set of consecutive resource units; and transmitting, by the wireless device, a message in the first bandwidth; wherein the set of consecutive resource units is included in a control resource set for a Type0 Physical Downlink Control Channel Common Search Space (CORESET 0) bandwidth or a Synchronization Signal Block (SSB) bandwidth; and wherein at least a portion of the CORESET 0 bandwidth or at least a portion the SSB bandwidth is punctured, and wherein the set of consecutive resource units corresponds to frequency resources of the CORESET 0 bandwidth that are not punctured.
5 . The method of claim 4 , wherein the set of consecutive resource units are included in a CORESET 0 bandwidth, and wherein the CORESET 0 bandwidth is configured to be smaller than the default bandwidth.
6 . The method of claim 4 , wherein the information indicative of the first bandwidth is carried by a master information block (MIB) or radio resource control (RRC) signaling, and wherein the information indicative of the first bandwidth includes at least one of: a location of a starting resource unit of the set of consecutive resource units, a location of an ending resource unit of the set of consecutive resource units, the number of resource units, an index corresponding to the location of the starting resource unit and the number of resource units, or an index corresponding to the location of the starting resource unit and the location of the ending resource unit.
7 . An apparatus for wireless communication comprising processor electronics and a memory storing instructions, execution of which by the processor electronics causes the apparatus to: determine a first bandwidth for a wireless device to perform narrowband communication, wherein the first bandwidth is less than or equal to a default bandwidth, wherein the default bandwidth is greater than or equal to 5 MHz, and wherein the first bandwidth is determined based on a location of a set of consecutive resource units and a number of resource units of the set of consecutive resource units; and transmit information indicative of the first bandwidth; wherein the set of consecutive resource units is included in a control resource set for a Type0 Physical Downlink Control Channel Common Search Space (CORESET 0) bandwidth or a Synchronization Signal Block (SSB) bandwidth; and wherein at least a portion of the CORESET 0 bandwidth or at least a portion the SSB bandwidth is punctured, and wherein the set of consecutive resource units corresponds to frequency resources of the CORESET 0 bandwidth that are not punctured.
8 . The apparatus of claim 7 , further caused to: configure a CORESET 0 bandwidth to be smaller than the default bandwidth, wherein the set of consecutive resource units are included in the CORESET 0 bandwidth.
9 . The apparatus of claim 7 , wherein the information indicative of the first bandwidth is carried by a master information block (MIB) or radio resource control (RRC) signaling, and wherein the information indicative of the first bandwidth includes at least one of: a location of a starting resource unit of the set of consecutive resource units, a location of an ending resource unit of the set of consecutive resource units, the number of resource units, an index corresponding to the location of the starting resource unit and the number of resource units, or an index corresponding to the location of the starting resource unit and the location of the ending resource unit.
10 . An apparatus for wireless communication comprising processor electronics and a memory storing instructions, execution of which by the processor electronics causes the apparatus to: receive, from a network device, information indicative of a first bandwidth for performing narrowband communication, wherein the first bandwidth is less than or equal to a default bandwidth, wherein the default bandwidth is greater than or equal to 5 MHz, and wherein the first bandwidth is determined based on a location of a set of consecutive resource units and a number of resource units of the set of consecutive resource units; and transmit a message in the first bandwidth; wherein the set of consecutive resource units is included in a control resource set for a Type0 Physical Downlink Control Channel Common Search Space (CORESET 0) bandwidth or a Synchronization Signal Block (SSB) bandwidth; and wherein at least a portion of the CORESET 0 bandwidth or at least a portion the SSB bandwidth is punctured, and wherein the set of consecutive resource units corresponds to frequency resources of the CORESET 0 bandwidth that are not punctured.
11 . The apparatus of claim 10 , wherein the set of consecutive resource units are included in a CORESET 0 bandwidth, and wherein the CORESET 0 bandwidth is configured to be smaller than the default bandwidth.
12 . The apparatus of claim 10 , wherein the information indicative of the first bandwidth is carried by a master information block (MIB) or radio resource control (RRC) signaling, and wherein the information indicative of the first bandwidth includes at least one of: a location of a starting resource unit of the set of consecutive resource units, a location of an ending resource unit of the set of consecutive resource units, the number of resource units, an index corresponding to the location of the starting resource unit and the number of resource units, or an index corresponding to the location of the starting resource unit and the location of the ending resource unit.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application is a continuation of International Patent Application No. PCT/CN2022/075955, filed on Feb. 11, 2022, the contents of which are incorporated herein by reference in their entirety. TECHNICAL FIELD This document is directed generally to wireless communications. BACKGROUND Wireless communication technologies are moving the world toward an increasingly connected and networked society. The rapid growth of wireless communications and advances in technology has led to greater demand for capacity and connectivity. Other aspects, such as energy consumption, device cost, spectral efficiency, and latency are also important to meeting the needs of various communication scenarios. In comparison with the existing wireless networks, next generation systems and wireless communication techniques need to provide support for an increased number of users and devices, as well as support an increasingly mobile society. SUMMARY This document relates to methods, systems, and devices for bandwidth configuration in mobile communication technology, including 5th Generation (5G), new radio (NR), 4th Generation (4G), and long-term evolution (LTE) communication systems. In one exemplary aspect, a wireless communication method is disclosed. The method includes determining, by a network device, a first bandwidth for narrowband communication, wherein the first bandwidth is less than or equal to a default bandwidth; and transmitting, to a wireless device, information indicative of the first bandwidth. In another exemplary aspect, a wireless communication method is disclosed. The method includes receiving, by a wireless device, information indicative of a first bandwidth for narrowband communications; and transmitting, by the wireless device, a message in the first bandwidth. In another exemplary aspect, a wireless communication method is disclosed. The method includes transmitting, to a wireless device, an indicator to be used by the wireless device for decoding synchronization information; and transmitting, to the wireless device, the synchronization information. In another exemplary aspect, a wireless communication method is disclosed. The method includes receiving, from a network device, an indicator for decoding synchronization information; receiving, from the network device, the synchronization information; and decoding the synchronization information based on the indicator. In another exemplary aspect, a wireless communication method is disclosed. The method includes transmitting, by a network device, configuration information to be used by a wireless device for reporting channel state information (CSI) in a first bandwidth; and receiving, from the wireless device, a CSI report based on the configuration information. In another exemplary aspect, a wireless communication method is disclosed. The method includes receiving, from a network device, configuration information for reporting channel state information (CSI) in a first bandwidth; transmitting, to the network device, a CSI report in the first bandwidth based on the configuration information. In another exemplary aspect, a wireless communication method is disclosed. The method includes configuring, by a network device, a range for receiving uplink data from a wireless device, wherein a number of resources included in the range is greater than or equal to a number of Physical Uplink Shared Channel (PUSCH) resources allocated to the wireless device; and receiving, from the wireless device, the uplink data within the range. In another exemplary aspect, a wireless communication method is disclosed. The method includes receiving, from a network device, information indicating a range for transmitting uplink data, wherein a number of resources included in the range is greater than or equal to a number of Physical Uplink Shared Channel (PUSCH) resources allocated to a wireless device; and transmitting, to the network device, the uplink data within the range. In yet another exemplary aspect, the above-described methods are embodied in the form of processor-executable code and stored in a computer-readable program medium. In yet another exemplary embodiment, a device that is configured or operable to perform the above-described methods is disclosed. The above and other aspects and their implementations are described in greater detail in the drawings, the descriptions, and the claims. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an example of a wireless communication system that includes a base station (BS) and user equipment (UE). FIG. 2 is a flowchart illustrating an example method. FIG. 3 is a flowchart illustrating an example method. FIG. 4 is a flowchart illustrating an example method. FIG. 5 is a flowchart illustrating an example method. FIG. 6 is a flowchart illustrating an example method. FIG. 7 is a flowchart illustrating an example method. FIG. 8 is a flowchart illustrating an example method. FIG. 9 is a flowchart illustrati