# US 2022/0286265 A1 · Time-domain resource determination method and apparatus, and terminal device

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- Number: US 2022/0286265 A1
- Document ID: US20220286265A1
- Status: Published application
- Kind: A1
- Application number: 17/746,519
- Filed: 2022-05-17
- Published: 2022-09-08
- Earliest claimed: 2020-04-08
- Assignees: Guangdong Oppo Mobile Telecommunications Corp., Ltd.
- Applicants: Guangdong Oppo Mobile Telecommunications Corp., Ltd.
- Inventors: Zhenshan ZHAO; Yi DING; Huei-Ming LIN
- Web page: https://patentgrep.com/patent/US20220286265A1

## CPC

- H04L 5/14: Two-way operation using the same type of signal, i.e. duplex
- H04W 72/0446: Resources in time domain, e.g. slots or frames
- H04L 5/0048: {Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091)}
- H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals}
- H04L 5/0092: {Indication of how the channel is divided}
- H04L 5/0094: {Indication of how sub-channels of the path are allocated}
- H04L 5/1469: {using time-sharing}
- H04W 28/26: Resource reservation
- H04W 92/18: between terminal devices
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

Provided are a time-domain resource determination method and apparatus, and a terminal device. The method comprises: a terminal device determining a first slot set within a first period according to a first time division duplexing (TDD) configuration in radio resource control (RRC) signaling or a second TDD configuration in a physical sidelink broadcast channel (PSBCH); and the terminal device selecting some slots from the first slot set according to a first bitmap, wherein the slots constitute time-domain resources in a resource pool.

## Claims

### Claim 1

A method for determining a time domain resource, comprising:
determining, by a terminal device, a first slot set in a first period according to a first time division duplexing (TDD) configuration in radio resource control (RRC) signaling or a second TDD configuration in a physical sidelink broadcast channel (PSBCH); and
selecting, by the terminal device, a part of slots from the first slot set according to a first bitmap, wherein the part of slots forms a time domain resource of a resource pool.

### Claim 2 (depends on 1)

The method according to claim 1, wherein determining the first slot set in the first period comprises:
determining the first slot set in the first period as follows:
tSL={t0SL,t1SL, . . . ,tTmaxSL};
where 0≤tiSL<M×2μ, M is a number of subframes in the first period and μ is determined based on a subcarrier spacing (SCS) on a bandwidth part (BWP).

### Claim 3 (depends on 2)

The method according to claim 2, wherein when the terminal device is a terminal device in coverage of a base station, the first slot set comprises all slots other than the following slots in the first period:
a first type of slots, the first type of slots being slots configured as sidelink synchronization signal block (S-SSB) resources;
a second type of slots, the second type of slots being slots in which a number of uplink symbols indicated by the first TDD configuration in the RRC signaling is less than N, and N being a positive integer;
a third type of slots, the third type of slots being full uplink slots, other than a second uplink slot set, in a first uplink slot set, the first uplink slot set being an uplink slot set indicated by the first TDD configuration in the RRC signaling, and the second uplink slot set being an uplink slot set indicated by the second TDD configuration in the PSBCH; and
a fourth type of slots, the fourth type of slots being reserved slots.

### Claim 4 (depends on 3)

The method according to claim 3, wherein that the second type of slots being the slots in which the number of uplink symbols indicated by the first TDD configuration in the RRC signaling is less than N comprises:
for a normal cyclic prefix (CP) length, the second type of slots are slots in which the number of uplink symbols indicated by the first TDD configuration in the RRC signaling is less than 14; or,
for an extension CP length, the second type of slots are slots in which the number of uplink symbols indicated by the first TDD configuration in the RRC signaling is less than 12.

### Claim 5 (depends on 1)

The method according to claim 1, further comprising:
determining, by the terminal device, a reserved resource interval based on a number of slots available for sidelink communication in a statistical period.

### Claim 6 (depends on 5)

The method according to claim 5, wherein determining, by the terminal device, the reserved resource interval based on the number of slots available for sidelink communication in the statistical period comprises:
determining, by the terminal device, the reserved resource interval in the following mode:
P
rsvp
TX
′
=
⌈
P
rsvp
TX
*
P
s
⁢
t
⁢
e
⁢
p
T
⌉
;
where Prsvp_TX′ represents the resource reservation interval in slots, Prsvp_TX represents an absolute resource reservation period in milliseconds, T represents the statistical period, and Pstep represents the number of slots available for sidelink communication in the statistical period.

### Claim 7 (depends on 1)

The method according to claim 1, when the terminal device is a terminal device in coverage of a base station, the method further comprises:
determining, by the terminal device, the second TDD configuration in the PSBCH according to the first TDD configuration in the RRC signaling; and
transmitting, by the terminal device, the PSBCH, wherein the PSBCH carries the second TDD configuration.

### Claim 8 (depends on 7)

The method according to claim 7, wherein the second TDD configuration comprises at least one of the following:
first indication information used to indicate a number of patterns;
second indication information used to indicate a pattern period; and
third indication information used to indicate a number of full uplink slots in the first pattern and/or the second pattern.

### Claim 9 (depends on 8)

The method according to claim 8, wherein
the third indication information indicates the number of full uplink slots in the first pattern and/or the second pattern through N bits {b5, . . . , b5+N−1};
wherein N represents a total number of bits used for indicating the number of full uplink slots in each pattern.

### Claim 10 (depends on 9)

The method according to claim 9, when a number of the patterns indicated by the first TDD configuration in the RRC signaling is 2, the method comprises:
determining, by the terminal device, a decimal representation value of the N bits in the PSBCH in the following mode:
D=└a×2μref−μPSBCH┘×(P2×2μref+1)+└b×2μref−μPSBCH┘;
where D represents the decimal representation value of the N bits in the PSBCH, a represents the number of full uplink slots in the first pattern, b represents the number of full uplink slots in the second pattern, μref represents a reference SCS index, and μPSBCH represents a configured or pre-configured SCS index on a BWP where the PSBCH is located.

### Claim 11 (depends on 10)

The method according to claim 10, wherein μref is determined in the following mode:
when a sum of the period of the first pattern and the period of the second pattern is less than 4 ms or not greater than 2.5 ms, μref=μPSBCH; or,
when the sum of the period of the first pattern and the period of the second pattern is 4 ms or 5 ms, μref=min(μPSBCH, 2); or,
when the sum of the period of the first pattern and the period of the second pattern is 10 ms, μref=min(μPSBCH, 1); or,
when the sum of the period of the first pattern and the period of the second pattern is 20 ms, μref=0.

### Claim 12

An apparatus for determining a time domain resource, applied to a terminal device, the apparatus comprising:
a memory, configured to store a computer program; and
a processor, configured to call and run the computer program stored in the memory to:
determine a first slot set in a first period according to a first time division duplexing (TDD) configuration in radio resource control (RRC) signaling or a second TDD configuration in a physical sidelink broadcast channel (PSBCH); and
select a part of slots from the first slot set according to a first bitmap, wherein the part of slots forms a time domain resource of a resource pool.

### Claim 13 (depends on 12)

The apparatus according to claim 12, wherein
the processor is further configured to determine a reserved resource interval based on the number of slots available for sidelink communication in a statistical period.

### Claim 14 (depends on 13)

The apparatus according to claim 13, wherein the processor is configured to determine the reserved resource interval in the following mode:
P
rsvp_TX
′
=
⌈
P
rsvp_TX
*
P
s
⁢
t
⁢
e
⁢
p
T
⌉
;
where Prsvp_TX′ represents the resource reservation interval in slots, Prsvp_TX represents an absolute resource reservation period in milliseconds, T represents the statistical period, and Pstep represents the number of slots available for sidelink communication in the statistical period.

### Claim 15 (depends on 12)

The apparatus according to claim 12, wherein when the terminal device is a terminal device in coverage of a base station,
the processor is further configured to determine the second TDD configuration in the PSBCH according to the first TDD configuration in the RRC signaling; and
the apparatus further comprises a transceiver configured to transmit the PSBCH, wherein the PSBCH carries the second TDD configuration.

### Claim 16 (depends on 15)

The apparatus according to claim 15, wherein the second TDD configuration comprises at least one of the following:
first indication information used to indicate a number of patterns;
second indication information used to indicate a pattern period; and
third indication information used to indicate a number of full uplink slots in the first pattern and/or the second pattern.

### Claim 17 (depends on 16)

The apparatus according to claim 16, wherein
the third indication information indicates the number of full uplink slots in the first pattern and/or the second pattern through N bits {b5, . . . , b5+N−1};
wherein N represents a total number of bits used for indicating the number of full uplink slots in each pattern.

### Claim 18 (depends on 17)

The apparatus according to claim 17, wherein when a number of the patterns indicated by the first TDD configuration in the RRC signaling is 2,
the processor is further configured to determine a decimal representation value of the N bits in the PSBCH in the following mode:
D=└a×2μref−μPSBCH┘×(P2×2μref+1)+└b×2μref−μPSBCH┘;
where D represents the decimal representation value of the N bits in the PSBCH, a represents the number of full uplink slots in the first pattern, b represents the number of full uplink slots in the second pattern, μref represents a reference SCS index, and μPSBCH represents a configured or pre-configured SCS index on a BWP where the PSBCH is located.

### Claim 19 (depends on 18)

The apparatus according to claim 18, wherein μref is determined in the following mode:
when a sum of the period of the first pattern and the period of the second pattern is less than 4 ms or not greater than 2.5 ms, μref=μPSBCH; or,
when the sum of the period of the first pattern and the period of the second pattern is 4 ms or 5 ms, μref=min(μPSBCH, 2); or,
when the sum of the period of the first pattern and the period of the second pattern is 10 ms, μref=min(μPSBCH, 1); or,
when the sum of the period of the first pattern and the period of the second pattern is 20 ms, μref=0.

### Claim 20

A non-transitory computer readable storage medium, configured to store a computer program, wherein the computer program enables a computer to execute a method for determining a time domain resource, comprising:
determining a first slot set in a first period according to a first time division duplexing (TDD) configuration in radio resource control (RRC) signaling or a second TDD configuration in a physical sidelink broadcast channel (PSBCH); and
selecting a part of slots from the first slot set according to a first bitmap, wherein the part of slots forms a time domain resource of a resource pool.