METHOD FOR DETERMINING SLOT FORMAT OF USER EQUIPMENT IN WIRELESS COMMUNICATION SYSTEM AND USER EQUIPMENT USING THE SAME

• US 20190312665A1
• Filed: 04/08/2019
• Published: 10/10/2019
• Est. Priority Date: 04/06/2018
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: JO, Soonki, YI, Yunjung
• Granted Patent: US 10,778,368 B2
• Time in Patent Office: Days
• CPC Class Codes: H04L 1/003 Adaptive formatting arrangements particular to signalling, e.g. variable amount of bits
• CPC Class Codes: H04L 27/26025 Numerology, i.e. varying one or more of symbol duration, subcarrier spacing, Fourier transform size, sampling rate or down-clocking allocating sub-channels of the transmission path H04L5/003
• CPC Class Codes: H04L 27/2607 Cyclic extensions
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/0078 Timing of allocation
• CPC Class Codes: H04L 5/0094 Indication of how sub-channels of the path are allocated
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 76/27 Transitions between radio resource control [RRC] states
• CPC Class Codes: H04W 88/023 with message or information receiving capability

Abstract

A method of determining a slot format in a wireless communication system, where the method is performed by a user equipment (UE) and includes: receiving, from a network, slot format information informing a first slot format for a plurality of normal symbols that are arranged within a period of time, wherein each of the plurality of normal symbols includes a normal cyclic prefix (CP). The method further includes: based on the received slot format information informing the first slot format, determining a second slot format for a plurality of extended symbols that are arranged within the period of time, wherein each of the plurality of extended symbols includes an extended CP.

Claims

1. A method of determining a slot format in a wireless communication system, the method performed by a user equipment (UE) and comprising:

receiving, from a network, slot format information informing a first slot format for a plurality of normal symbols that are arranged within a period of time, wherein each of the plurality of normal symbols comprises a normal cyclic prefix (CP), and

based on the received slot format information informing the first slot format, determining a second slot format for a plurality of extended symbols that are arranged within the period of time, wherein each of the plurality of extended symbols comprises an extended CP.

2. The method of claim 1, wherein the first slot format informs that each of the plurality of normal symbols is a downlink symbol type, an uplink symbol type, or a flexible symbol type.

3. The method of claim 1, wherein the second slot format informs that each of the plurality of extended symbols is a downlink symbol type, an uplink symbol type, or a flexible symbol type.

4. The method of claim 1, wherein determining the second slot format for the plurality of extended symbols, based on the received slot format information informing the first slot format, comprises:

in a state in which an extended symbol, among the plurality of extended symbols, overlaps in time with at least one normal symbol among the plurality of normal symbols;

determining the extended symbol as a downlink symbol type, an uplink symbol type, or a flexible symbol type, based on whether the at least one normal symbol is the downlink symbol type, the uplink symbol type, or the flexible symbol type.

5. The method of claim 4, wherein determining the extended symbol as the downlink symbol type, the uplink symbol type, or the flexible symbol type, based on whether the at least one normal symbol is the downlink symbol type, the uplink symbol type, or the flexible symbol type comprises:

based on the at least one normal symbol all being the uplink symbol type, all being the downlink symbol type, or all being the flexible symbol type, determining the extended symbol that overlaps the at least one normal symbol to be the uplink symbol type, the downlink symbol type, or the flexible symbol type, respectively, corresponding to the at least one normal symbol.

6. The method of claim 4, wherein determining the extended symbol as the downlink symbol type, the uplink symbol type, or the flexible symbol type, based on whether the at least one normal symbol is the downlink symbol type, the uplink symbol type, or the flexible symbol type comprises:

based on the at least one normal symbol including the flexible symbol type, determining the extended symbol that overlaps the at least one normal symbol to be the flexible symbol type.

7. The method of claim 4, wherein determining the extended symbol as the downlink symbol type, the uplink symbol type, or the flexible symbol type, based on whether the at least one normal symbol is the downlink symbol type, the uplink symbol type, or the flexible symbol type comprises:

based on the at least one normal symbol including both the uplink symbol type and the downlink symbol type, determining the extended symbol that overlaps the at least one normal symbol to be the flexible symbol type.

8. The method of claim 4, wherein based on a type of CP for downlink being different from a type of CP for uplink, only the second slot format for the uplink or the downlink with the extended CP is determined.

9. The method of claim 4, wherein a reference subcarrier spacing (SCS) related to the plurality of normal symbols is equal to a reference SCS related to the plurality of extended symbols.

10. The method of claim 4, wherein a reference SCS related to the plurality of normal symbols is smaller than a reference SCS related to the plurality of extended symbols, and

wherein determining the second slot format for the plurality of extended symbols, based on the received slot format information informing the first slot format, comprises:

based on at least one extended symbol being included within a duration of a normal symbol, determining the at least one extended symbol to be of a same symbol type as the including normal symbol.

11. The method of claim 1, wherein the first slot format is one of a plurality of first slot formats.

12. A user equipment (UE), comprising:

a transceiver; and

at least one processor, and

at least one computer memory operably connectable to the at least one processor and storing instructions that, when executed by the at least one processor, perform operations comprising;

receiving, through the transceiver and from a network, slot format information informing a first slot format for a plurality of normal symbols that are arranged within a period of time, wherein each of the plurality of normal symbols comprises a normal cyclic prefix (CP), and

based on the received slot format information informing the first slot format, determining a second slot format for a plurality of extended symbols that are arranged within the period of time, wherein each of the plurality of extended symbols comprises an extended CP.

13. At least one computer-readable storage media storing instructions that, when executed by at least one processor, perform operations comprising:

receiving, from a network, slot format information informing a first slot format for a plurality of normal symbols that are arranged within a period of time, wherein each of the plurality of normal symbols comprises a normal cyclic prefix (CP), and

based on the received slot format information informing the first slot format, determining a second slot format for a plurality of extended symbols that are arranged within the period of time, wherein each of the plurality of extended symbols comprises an extended CP.