# US 2019/0174446 A1 · Methods, Devices and Systems for Initial Grant-Free Transmission Determination

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- Number: US 2019/0174446 A1
- Document ID: US20190174446A1
- Status: Published application
- Kind: A1
- Application number: 16/196,342
- Filed: 2018-11-20
- Published: 2019-06-06
- Earliest claimed: 2017-12-01
- Assignees: Huawei Technologies Co., Ltd.
- Applicants: Huawei Technologies Co., Ltd.
- Inventors: Liqing Zhang; Yiqun Wu; Yan Chen; Yi Wang
- Web page: https://patentgrep.com/patent/US20190174446A1

## CPC

- H04W 56/0045: {compensating for timing error by altering transmission time}
- H04L 1/08: by repeating transmission, e.g. Verdan system {(H04L1/1858 and H04L1/189 take precedence)}
- H04L 1/1819: {with retransmission of additional or different redundancy}
- H04L 1/1864: {ARQ related signaling (H04L1/1607 takes precedence)}
- H04W 88/06: adapted for operation in multiple networks {or having at least two operational modes}, e.g. multi-mode terminals
- H04W 92/045: {between access point and backbone network device}
- H04L 1/189: {Transmission or retransmission of more than one copy of a message}
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

In accordance to embodiments, methods, devices, and systems for determining initial transmissions in grant-free transmissions are disclosed. A UE receives a resource configuration for grant-free (GF) transmissions. The resource configuration comprises a periodicity parameter (P), a repetition number (K), and a sequence of redundancy version (RV) numbers corresponding to one or more RV types. The periodicity parameter defines a period having K transmission occasions (TOs), and each of the K TOs is associated with one RV number in the sequence of RV numbers. The UE performs an initial GF transmission of data in a TO of the K TOs in the period defined by the periodicity parameter. The TO is associated with an RV number corresponding to RV0.

## Claims

### Claim 1

A method, the method comprising:
receiving, by, a user equipment (UE), a resource configuration for grant-free (GF) transmissions, wherein the resource configuration comprises a periodicity parameter (P), a repetition number (K), and a sequence of redundancy version (RV) numbers corresponding to one or more RV types, the periodicity parameter defines a period having K transmission occasions (TOs), and each of the K TOs is associated with one RV number in the sequence of RV numbers; and
performing, by the UE, an initial GF transmission of data in a TO of the K TOs in the period defined by the periodicity parameter, the TO associated with an RV number corresponding to RV0.

### Claim 2

The method of Clair the sequence of RV numbers comprising {o, 3, 0, 3}, o in the sequence corresponding to RV0, and 3 in the sequence corresponding to RV3.

### Claim 3

The method of claimwherein the K TOs are continuous or separated.

### Claim 4 (depends on 1)

The method of claim 1, wherein the UE performs one or more new initial GF transmissions of the data for at most K GF transmissions of the data, or terminates the one or more new initial GF transmissions of the data at a last TO of the K TOs within the period defined by the periodicity parameter.

### Claim 5 (depends on 1)

The method of claim 1, wherein K is 2, 4, or 8.

### Claim 6 (depends on 1)

The method of claim 1, wherein a size of the sequence of RV numbers is 4, an n-th TO of the K TOs is associated with an (n mod 4)-th RV number in the sequence of RV numbers, n is an integer greater than or equal to 0, and n is less than or equal to K−1.

### Claim 7

A method, the method comprising:
receiving, by a user equipment (UE), a resource configuration for grant-free (GF) transmissions, wherein the resource configuration comprises a periodicity parameter (P), a repetition number (K), and a sequence of redundancy version (RV) numbers comprising {0, 2, 3, 1}, 0 in the sequence corresponding to RV0, 1 in the sequence corresponding to RV1, 2 in the sequence corresponding to RV2, and 3 in the sequence corresponding to RV3, the periodicity parameter defines a period having K transmission occasions (TOs), and each of the K TOs is associated with one RV number in the sequence of RV numbers; and
performing, by the UE, an initial GF transmission of data in a TO of the K TOs in the period defined by the periodicity parameter using an RV corresponding to an RV number in the sequence of RV numbers, the RV based on a size of the sequence of RV numbers and a position of the TO in the K TOs.

### Claim 8 (depends on 7)

The method of claim 7, wherein K is an integer less than 4, the TO is an n-th TO of the K TOs associated with an (n mod 4)-th RV number in the sequence of RV numbers corresponding to the RV used for the GF transmission of the data in the TO, n is an integer greater than or equal to o, and n is less than or equal to K−1.

### Claim 9

The method of aim 7, wherein the K TOs are continuous or separated.

### Claim 10 (depends on 7)

The method of claim 7, wherein the UE performs one or more new initial GF transmissions of the data for at most K GF transmissions of the data, or terminates the one or more new initial GF transmissions of the data at a last TO of the K TOs within the period defined by the periodicity parameter.

### Claim 11 (depends on 7)

The method of claim 7, wherein K is 2 or 4.

### Claim 12

A user equipment (UE), the UE comprising:
a processor; and
a non-transitory computer readable storage medium storing programming for execution by the processor, the programming including instructions to:
receive a resource configuration for grant-free (GF) transmissions, wherein the resource configuration comprises a periodicity parameter (P), a repetition number (K), and a sequence of redundancy version (RV) numbers corresponding to one or more RV types, the periodicity parameter defines a period having K transmission occasions (TOs), and each of the K TOs is associated with one RV number in the sequence of RV numbers; and
perform an initial GF transmission of data in a TO of the K TOs in the period defined by the periodicity parameter, the TO associated with an RV number corresponding to RV0.

### Claim 13 (depends on 12)

The UE of claim 12, the sequence of RV numbers comprising {0, 3, 0, 3}, 0 in the sequence corresponding to RV0, and 3 in the sequence corresponding to RV3.

### Claim 14 (depends on 12)

The UE of claim 12, wherein the K TOs are continuous or separated.

### Claim 15 (depends on 12)

The UE of claim 12, wherein the UE performs one or more new initial GF transmissions of the data for at most K GF transmissions of the data, or terminates the one or more new initial GF transmissions of the data at a last TO of the K TOs within the period defined by the periodicity parameter.

### Claim 16 (depends on 12)

The UE of claim 12, wherein K is 2, 4, or 8.

### Claim 17 (depends on 12)

The UE of claim 12, wherein a size of the sequence of RV numbers is 4, an n-th TO of the K TOs is associated with an (n mod 4)-th RV number in the sequence of RV numbers, n is an integer greater than or equal to 0, and n is less than or equal to K−1.

### Claim 18

A user equipment (UE), the UE comprising:
a processor; and
a non-transitory computer readable storage medium storing programming for execution by the processor, the programming including instructions to:
receive a resource configuration for grant-free (GF) transmissions, wherein the resource configuration comprises a periodicity parameter (P), a repetition number (K), and a sequence of redundancy version (RV) numbers comprising {0, 2, 3, 1}, 0 in the sequence corresponding to RV0, a in the sequence corresponding to RV1, 2 in the sequence corresponding to RV2, and 3 in the sequence corresponding to RV3, the periodicity parameter defines a period having K transmission occasions (TOs), and each of the K TOs is associated with one RV number in the sequence of RV numbers; and
perform an initial GF transmission of data in a TO of the K TOs in the period defined by the periodicity parameter using an RV corresponding to an RV number in the sequence of RV numbers, the RV based on a size of the sequence of RV numbers and a position of the TO in the K TOs.

### Claim 19 (depends on 18)

The UE of claim 18, wherein K is an integer less than 4, the TO is an n-th TO of the K TOs associated with an (n mod 4)-th RV number in the sequence of RV numbers corresponding to the RV used for the GF transmission of the data in the TO, n is an integer greater than or equal to 0, and n is less than or equal to K−1.

### Claim 20 (depends on 18)

The UE of claim 18, wherein the K TOs are continuous or separated.

### Claim 21 (depends on 18)

The UE of claim 18, wherein the UE performs one or more new initial GF transmissions of the data for at most K GF transmissions of the data, or terminates the one or more new initial GF transmissions of the data at a last TO of the K TOs within the period defined by the periodicity parameter.

### Claim 22 (depends on 18)

The UE of claim 18, wherein K is 2 or 4.