# US 12,193,064 B2 · Method of configuring uplink grant-free transmission and device thereof

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- Number: US 12,193,064 B2
- Document ID: US12193064B2
- Status: Granted
- Kind: B2
- Application number: 17/660,668
- Filed: 2022-04-26
- Published: 2022-08-11
- Granted: 2025-01-07
- Earliest claimed: 2017-06-16
- Assignees: Vivo Mobile Communication Co., Ltd.
- Applicants: Vivo Mobile Communication Co., Ltd.
- Inventors: Xiaohang Chen; Xiaodong Yang
- Web page: https://patentgrep.com/patent/US12193064B2

## CPC

- H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals}
- H04W 76/27: Transitions between radio resource control [RRC] states
- H04L 1/1642: {Formats specially adapted for sequence numbers}
- H04L 1/1819: {with retransmission of additional or different redundancy}
- H04W 72/0446: Resources in time domain, e.g. slots or frames
- H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal
- H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT}
- H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)}
- H04L 5/1469: {using time-sharing}
- 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)}
- 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

A method of configuring an uplink grant-free transmission and a device thereof are provided. The method includes: acquiring a transmission location of an uplink grant-free transmission according to a current configuration parameter; acquiring, according to the transmission location, a corresponding subframe time slot, and initiating the uplink grant-free transmission to a network side on the subframe time slot; where the current configuration parameter includes one or more of: a starting location, a subframe internal offset and a transmission period, where the starting location includes a starting location indicated by a system frame number and a subframe number or a starting location indicated by a subframe number.

## Claims

### Claim 1

A non-transitory computer-readable storage medium, comprising: at least one processor and at least one memory coupled to the processor to communicate with the processor, wherein the memory stores program instructions executable by the processor, the processor calls the program instructions to perform:
receiving a first configuration parameter from a network side, wherein the first configuration parameter comprises a transmission period T_interval;
acquiring a transmission location TN of an uplink grant-free transmission according to the first configuration parameter;
wherein the acquiring the transmission location TN of the uplink grant-free transmission comprises:
acquiring a transmission location TN of an Nth uplink grant-free transmission through the following calculation formula:
TN=[(N_SFN_start*number OfSlotsPerFrame*numberOfSymbolsPerSlot+N_slot_start*numberOfSymbolsPerSlot+N_start_offset)+N*N_interval]mod (max_SFN*numberOfslotsPerFrame*numberOfSymbolsPerSlot)
wherein N_SFN_start is a system frame starting location, N_slot_start is a slot starting location, max_SFN is the maximum system frame number, numberOfSlotsPerFrame is the quantity of slots in each system frame, numberOfSymbolsPerSlot is the quantity of symbols in each slot, and N_start_offset is in units of the quantity of symbols.

### Claim 2 (depends on 1)

The non-transitory computer-readable storage medium according to claim 1, wherein the processor calls the program instructions to further perform:
acquiring the HARQ process ID used in the first time of transmission of the uplink grant-free transmission by a first process calculation formula, wherein the first process calculation formula is:
Proc_ID=(floor (TN/T_interval)) mod max_proc_num;
wherein Proc_ID is the HARQ process ID, and max_proc_num is the total number of HARQ processes available for the uplink grant-free transmission.

### Claim 3 (depends on 1)

The non-transitory computer-readable storage medium according to claim 1, wherein in the case that the subframe time slot is configured through mini-slots with different lengths, an uplink grant-free reference signal is sent to the network side at the transmission time and in the mini-slot corresponding to the transmission location determined by the calculation formula, and uplink grant-free data is sent to the network side on a remaining resource of the corresponding mini-slot.

### Claim 4 (depends on 1)

The non-transitory computer-readable storage medium according to claim 1, wherein in the case that the subframe time slot is configured through mini-slots with different lengths, the uplink grant-free transmission is initiated to the network side on a kth mini-slot after the mini-slot corresponding to the transmission location determined by the calculation formula, or the uplink grant-free transmission is initiated to the network side on a kth symbol after a symbol of the mini-slot corresponding to the transmission time determined by the calculation formula, wherein k is an integer greater than or equal to 1.

### Claim 5

A non-transitory computer-readable storage medium, comprising: at least one processor and at least one memory coupled to the processor to communicate with the processor, wherein the memory stores program instructions executable by the processor, the processor calls the program instructions to perform:
indicating to a terminal device a first configuration parameter for an uplink grant- free transmission; wherein the first configuration parameter comprises a transmission period T_interval wherein the transmission location TN is acquired based on the first configuration parameter by:
acquiring a transmission location TN of an Nth uplink grant-free transmission through the following calculation formula:
TN=[(N_SFN_start*number OfSlotsPerFrame*numberOfSymbolsPerSlot+N_slot_start*numberOfSymbolsPerSlot+N_start_offset)+N*N_interval]mod (max_SFN*numberOfslotsPerFrame*numberOfSymbolsPerSlot)
wherein N_SFN_start is a system frame starting location, N_slot start is a slot starting location, max_SFN is the maximum system frame number, numberOfSlotsPerFrame is the quantity of slots in each system frame, numberOfSymbolsPerSlot is the quantity of symbols in each slot, and N_start_offset is in units of the quantity of symbols.

### Claim 6 (depends on 5)

The non-transitory computer-readable storage medium according to claim 5, wherein the first configuration parameter is in a first association with a HARQ process ID of the uplink grant-free transmission, and the first association comprises:
Proc_ID=(floor (TN/T_interval)) mod max_proc_num;
wherein Proc_ID is the HARQ process ID, TN is the transmission location of the uplink grant-free transmission, and max_proc_num is the total number of HARQ processes available for the uplink grant-free transmission, the transmission location TN is acquired based on the first configuration parameter.

### Claim 7 (depends on 5)

The non-transitory computer-readable storage medium according to claim 5, wherein the indicating to the terminal device the configuration parameter for the uplink grant-free transmission comprises:
indicating explicitly to the terminal device the configuration parameter for the uplink grant-free transmission through an RRC signaling or a PDCCH signaling; and/or
indicating implicitly to the terminal device the configuration parameter for the uplink grant-free transmission through a PDCCH signaling.