# US 11,451,353 B2 · Communication method of reference signal and non-transitory storage medium

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- Number: US 11,451,353 B2
- Document ID: US11451353B2
- Status: Granted
- Kind: B2
- Application number: 16/770,245
- Filed: 2018-12-07
- Published: 2020-11-26
- Granted: 2022-09-20
- Earliest claimed: 2017-12-08
- Assignees: Zte Corporation
- Applicants: Zte Corporation
- Inventors: Yuxin Wang; Zhaohua Lu; Yu Ngok Li; Chuangxin Jiang
- Web page: https://patentgrep.com/patent/US11451353B2

## CPC

- 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)}
- H04B 1/713: using frequency hopping
- H04W 72/0446: Resources in time domain, e.g. slots or frames
- H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT}
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- H04B: TRANSMISSION
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

A communication method includes: determining a radio resource for a second communication node to send a reference signal; and receiving the reference signal sent by the second communication node using the radio resource; where the radio resource includes a time domain resource, and where determining the radio resource for the second communication node to send the reference signal includes: determining, by the first communication node, the time domain resource according to the following parameters: a period of the reference signal, and a slot offset of the reference signal.

## Claims

### Claim 1

A communication method of a reference signal, applied to a first communication node, comprising:
determining a radio resource for a second communication node to send the reference signal; and
receiving the reference signal sent by the second communication node using the radio resource,
wherein the radio resource comprises a time domain resource;
wherein determining the radio resource for the second communication node to send the reference signal comprises:
determining, by the first communication node, the time domain resource according to following parameters: a period of the reference signal, and a slot offset of the reference signal, wherein
when the period of the reference signal is 1, the slot offset of the reference signal is empty;
when the period of the reference signal is 1280, the slot offset of the reference signal is an integer greater than or equal to 0 and less than or equal to 1279; and
when the period of the reference signal is 2560, the slot offset of the reference signal is an integer greater than or equal to 0 and less than or equal to 2559;
wherein the parameters further comprise at least one of: a system frame number, a slot index within a frame, a quantity of slots in one subframe or a quantity of slots in one system frame;
wherein the time domain resource satisfies the following relationship:
(10·nf·Nslotsubframe,μ+ns,fμ−Toffset)mod TSRS=0;
wherein ns,fμ∈{0, . . . , Nslotframe,μ−1}, ns,fμ is the slot index within a frame, nt is the system frame number, Nslotsubframe,μ is the quantity of slots in one subframe, slot Nslotsubframe,μ is the quantity of slots in one system frame, Toffset is the slot offset of the reference signal, and TSRS the period of the reference signal; and
wherein the reference signal is an uplink sounding reference signal.

### Claim 2 (depends on 1)

The method of claim 1, wherein relations between the period of the reference signal and the slot offset of the reference signal further comprise at least one of:
when the period of the reference signal is 2, the slot offset of the reference signal is an integer greater than or equal to 0 and less than or equal to 1;
when the period of the reference signal is 4, the slot offset of the reference signal is an integer greater than or equal to 0 and less than or equal to 3;
when the period of the reference signal is 5, the slot offset of the reference signal is an integer greater than or equal to 0 and less than or equal to 4;
when the period of the reference signal is 8, the slot offset of the reference signal is an integer greater than or equal to 0 and less than or equal to 7;
when the period of the reference signal is 10, the slot offset of the reference signal is an integer greater than or equal to 0 and less than or equal to 9;
when the period of the reference signal is 16, the slot offset of the reference signal is an integer greater than or equal to 0 and less than or equal to 15;
when the period of the reference signal is 20, the slot offset of the reference signal is an integer greater than or equal to 0 and less than or equal to 19;
when the period of the reference signal is 32, the slot offset of the reference signal is an integer greater than or equal to 0 and less than or equal to 31;
when the period of the reference signal is 40, the slot offset of the reference signal is an integer greater than or equal to 0 and less than or equal to 39;
when the period of the reference signal is 64, the slot offset of the reference signal is an integer greater than or equal to 0 and less than or equal to 63;
when the period of the reference signal is 80, the slot offset of the reference signal is an integer greater than or equal to 0 and less than or equal to 79;
when the period of the reference signal is 160, the slot offset of the reference signal is an integer greater than or equal to 0 and less than or equal to 159;
when the period of the reference signal is 320, the slot offset of the reference signal is an integer greater than or equal to 0 and less than or equal to 319; or
when the period of the reference signal is 640, the slot offset of the reference signal is an integer greater than or equal to 0 and less than or equal to 639.

### Claim 3 (depends on 1)

The method of claim 1, wherein a value of the period of the reference signal comprises at least one of: 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2048 or 2560.

### Claim 4 (depends on 1)

The method of claim 1, wherein the period of the reference signal and the slot offset of the reference signal have a unit of slots or milliseconds.

### Claim 5 (depends on 1)

The method of claim 1, wherein the radio resource further comprises a frequency domain resource;
wherein determining the radio resource for the second communication node to send the reference signal comprises:
in response to the reference signal being an uplink sounding reference signal, determining a frequency domain position of the reference signal according to a quantity or number of the uplink sounding reference signal to be sent in time domain, and determining the frequency domain resource according to the frequency domain position,
wherein the quantity or number of the uplink sounding reference signal to be sent in time domain is determined based on at least one of following parameters:
a slot index within a frame, a system frame number, a period of the reference signal, a slot offset of the reference signal, a quantity of slots in one subframe, a quantity of slots in one system frame, a quantity of time domain symbols for sending the reference signal within a slot, a quantity of time domain symbols repeated within the slot or a quantity of time domain symbols of the reference signal occupying a same frequency domain position within the slot, or an index or number of a time domain symbol for sending the reference signal within the slot.

### Claim 6 (depends on 5)

The method of claim 5, further comprising:
determining, by the first communication node, the quantity or number of the reference signal to be sent in time domain in at least one of following manners:
in response to enabling intra-slot frequency hopping of the reference signal and disabling inter-slot frequency hopping of the reference signal, nSRS└i/R┘, wherein i=0, . . . ,N−1;
in response to enabling the inter-slot frequency hopping of the reference signal and disabling the intra-slot frequency hopping of the reference signal,
n
S
⁢
R
⁢
S
=
⌊
(
n
f
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·
N
s
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l
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f
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a
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μ
+
n
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·
1
T
S
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R
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⌋
;
or
in response to enabling the intra-slot frequency hopping of the reference signal and enabling the inter-slot frequency hopping of the reference signal,
n
S
⁢
R
⁢
S
=
⌊
(
n
f
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·
N
s
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N
R
·
1
T
S
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R
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+
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i
/
R
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;
wherein ns,fμ∈{0, . . . , Nslotframe,μ−1}, ns,fμ is a slot index within a frame, nf is a system frame number, Nslotframe,μ a quantity of slots in one system frame, TSRS is a period of the reference signal, N is a quantity of time domain symbols for sending the reference signal and configured within a slot, R is a quantity of time domain symbols repeated within the slot or a quantity of time domain symbols of the reference signal occupying a same frequency domain position within the slot, nSRS is the quantity or number of the uplink sounding reference signal to be sent in time domain, and i is an index or number of a time domain symbol for sending the reference signal within the slot.

### Claim 7 (depends on 5)

The method of claim 5, wherein the quantity or number of the uplink sounding reference signal to be sent in time domain is determined according to a following formula:
n
S
⁢
R
⁢
S
=
α
·
⌊
(
n
f
⁣
·
N
s
⁢
l
⁢
o
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t
f
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r
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a
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m
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e
,
μ
+
n
s
,
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)
·
N
R
·
1
T
S
⁢
R
⁢
S
⌋
+
⌊
i
/
R
⌋
;
wherein a value of α is 0 or 1, ns,fμ∈{0, . . . , Nslotframe,μ−1}, ns,fμ is a slot index within a fame, nf is a system frame number, Nslotframe,μ is a quantity of slots in one system frame, TSRS is a period of the reference signal, N is a quantity of time domain symbols for sending the reference signal and configured within a slot, R is a quantity of time domain symbols repeated within the slot or a quantity of time domain symbols of the reference signal occupying a same frequency domain position within the slot, nSRS is the quantity or number of the uplink sounding reference signal to be sent in time domain, and i is an index or number of a time domain symbol for sending the reference signal within the slot.

### Claim 8

A communication method of a reference signal, applied to a second communication node, comprising:
determining a radio resource for sending the reference signal; and
sending the reference signal using the radio resource to a first communication node, wherein the radio resource comprises a time domain resource;
wherein determining the radio resource for sending the reference signal comprises:
determining, by the second communication node, the time domain resource according to following parameters: a period of the reference signal, and a slot offset of the reference signal, wherein
when the period of the reference signal is 1, the slot offset of the reference signal is empty;
when the period of the reference signal is 1280, the slot offset of the reference signal is an integer greater than or equal to 0 and less than or equal to 1279; and
when the period of the reference signal is 2560, the slot offset of the reference signal is an integer greater than or equal to 0 and less than or equal to 25591
wherein the parameters further comprise at least one of: a system frame number, a slot index within a frame, a quantity of slots in one subframe or a quantity of slots in one system frame;
wherein the time domain resource satisfies the following relationship:
(10·nf·Nslotsubframe,μ+ns,fμ−Toffset)mod TSRS=0 or
wherein ns,fμ∈{0, . . . , Nslotframe,μ−1}, ns,fμ is the slot index within a frame, nf is the system frame number, Nslotsubframe,μ of slots in one subframe, Nslotsubframe,μ is the quantity of slots in one system frame, Toffset is the slot offset of the reference signal, and TSRS the period of the reference signal; and
wherein the reference signal is an uplink sounding reference signal.

### Claim 9 (depends on 8)

The method of claim 8, wherein relations between the period of the reference signal and the slot offset of the reference signal further comprise at least one of:
when the period of the reference signal is 2, the slot offset of the reference signal is an integer greater than or equal to 0 and less than or equal to 1;
when the period of the reference signal is 4, the slot offset of the reference signal is an integer greater than or equal to 0 and less than or equal to 3;
when the period of the reference signal is 5, the slot offset of the reference signal is an integer greater than or equal to 0 and less than or equal to 4;
when the period of the reference signal is 8, the slot offset of the reference signal is an integer greater than or equal to 0 and less than or equal to 7;
when the period of the reference signal is 10, the slot offset of the reference signal is an integer greater than or equal to 0 and less than or equal to 9;
when the period of the reference signal is 16, the slot offset of the reference signal is an integer greater than or equal to 0 and less than or equal to 15;
when the period of the reference signal is 20, the slot offset of the reference signal is an integer greater than or equal to 0 and less than or equal to 19;
when the period of the reference signal is 32, the slot offset of the reference signal is an integer greater than or equal to 0 and less than or equal to 31;
when the period of the reference signal is 40, the slot offset of the reference signal is an integer greater than or equal to 0 and less than or equal to 39;
when the period of the reference signal is 64, the slot offset of the reference signal is an integer greater than or equal to 0 and less than or equal to 63;
when the period of the reference signal is 80, the slot offset of the reference signal is an integer greater than or equal to 0 and less than or equal to 79;
when the period of the reference signal is 160, the slot offset of the reference signal is an integer greater than or equal to 0 and less than or equal to 159;
when the period of the reference signal is 320, the slot offset of the reference signal is an integer greater than or equal to 0 and less than or equal to 319; or
when the period of the reference signal is 640, the slot offset of the reference signal is an integer greater than or equal to 0 and less than or equal to 639.

### Claim 10 (depends on 8)

The method of claim 8, wherein a value of the period of the reference signal comprises at least one of: 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2048 or 2560.

### Claim 11 (depends on 8)

The method of claim 8, wherein the period of the reference signal and the slot offset of the reference signal have a unit of slots or milliseconds.

### Claim 12 (depends on 8)

The method of claim 8, wherein the radio resource further comprises a frequency domain resource;
wherein determining the radio resource for sending the reference signal comprises:
in response to the reference signal being an uplink sounding reference signal, determining a frequency domain position of the reference signal according to a quantity or number of the uplink sounding reference signal to be sent in time domain, and determining the frequency domain resource according to the frequency domain position,
wherein the quantity or number of the uplink sounding reference signal to be sent in time domain is determined based on at least one of following parameters:
a slot index within a frame, a system frame number, a period of the reference signal, a slot offset of the reference signal, a quantity of slots in one subframe, a quantity of slots in one system frame, a quantity of time domain symbols for sending the reference signal within a slot, a quantity of time domain symbols repeated within the slot or a quantity of time domain symbols of the reference signal occupying a same frequency domain position within the slot, or an index or number of a time domain symbol for sending the reference signal within the slot.

### Claim 13 (depends on 12)

The method of claim 12, further comprising:
determining, by the second communication node, the quantity or number of the reference signal to be sent in time domain in at least one of following manners:
in response to enabling intra-slot frequency hopping of the reference signal and disabling inter-slot frequency hopping of the reference signal, nSRS└i/R┘, wherein i=0, . . . ,N−1;
in response to enabling the inter-slot frequency hopping of the reference signal and disabling the intra-slot frequency hopping of the reference signal,
n
S
⁢
R
⁢
S
=
⌊
(
n
f
⁣
·
N
s
⁢
l
⁢
o
⁢
t
f
⁢
r
⁢
a
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m
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e
,
μ
+
n
s
,
f
u
)
·
1
T
S
⁢
R
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S
⌋
;
or
in response to enabling the intra-slot frequency hopping of the reference signal and enabling the inter-slot frequency hopping of the reference signal,
n
SRS
=
⌊
(
n
f
·
N
slot
frame
,
μ
+
n
s
,
f
u
)
·
1
T
SRS
⌋
⁢
n
SRS
=
⌊
(
n
f
·
N
slot
frame
,
μ
+
n
s
,
f
u
)
·
N
R
·
1
T
SRS
⌋
+
⌊
i
/
R
⌋
;
wherein ns,fμ∈{0, . . . , Nslotframe,μ−1}, ns,fμ is a slot index within a frame, nf is a system frame number, Nslotsubframe,μ is a quantity of slots in one system frame, TSRS is a period of the reference signal, N is a quantity of time domain symbols for sending the reference signal and configured within a slot, R is a quantity of time domain symbols repeated within the slot or a quantity of time domain symbols of the reference signal occupying a same frequency domain position within the slot, nSRS is the quantity or number of the uplink sounding reference signal to be sent in time domain, and i is an index or number of a time domain symbol for sending the reference signal within the slot.

### Claim 14 (depends on 12)

The method of claim 12, wherein the quantity or number of the uplink sounding reference signal to be sent in time domain is obtained according to one of following formulas:
n
S
⁢
R
⁢
S
=
α
·
⌊
(
n
f
⁣
·
N
s
⁢
l
⁢
o
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t
f
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r
⁢
a
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m
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e
,
μ
+
n
s
,
f
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)
·
N
R
·
1
T
S
⁢
R
⁢
S
⌋
+
⌊
i
/
R
⌋
;
wherein a value of α is 0 or 1, ns,fμ∈{0, . . . , Nslotframe,μ−1}, ns,fμ is a slot index within a frame, nf is a system frame number, Nslotsubframe,μ is a quantity of slots in one system frame, TSRS is a period of the reference signal, N is a quantity of time domain symbols for sending the reference signal and configured within a slot, R is a quantity of time domain symbols repeated within the slot or a quantity of time domain symbols of the reference signal occupying a same frequency domain position within the slot, nSRS is the quantity or number of the uplink sounding reference signal to be sent in time domain, and i is an index or number of a time domain symbol for sending the reference signal within the slot.

### Claim 15

A non-transitory storage medium, comprising stored programs, wherein the programs, when executed, perform a communication method of a reference signal,
wherein the method comprises:
determining a radio resource for sending the reference signal; and
sending the reference signal using the radio resource to a first communication node, wherein the radio resource comprises a time domain resource;
wherein determining the radio resource for sending the reference signal comprises:
determining the time domain resource according to following parameters: a period of the reference signal, and a slot offset of the reference signal, wherein
when the period of the reference signal is 1, the slot offset of the reference signal is empty;
when the period of the reference signal is 1280, the slot offset of the reference signal is an integer greater than or equal to 0 and less than or equal to 1279; and
when the period of the reference signal is 2560, the slot offset of the reference signal is an integer greater than or equal to 0 and less than or equal to 2559;
wherein the parameters further comprise at least one of: a system frame number, a slot index within a frame, a quantity of slots in one subframe or a quantity of slots in one system frame;
wherein the time domain resource satisfies the following relationship:
(10·nf·Nslotsubframe,μ+ns,fμ−Toffset)mod TSRS=0 or
wherein ns,fμ∈{0, . . . , Nslotframe,μ−1}, ns,fμ is the slot index within a frame, nf is the system frame number, Nslotsubframe,μ is the quantity of slots in one subframe, Nslotsubframe,μ is the quantity of slots in one system frame, Toffset is the slot offset of the reference signal, and TSRS the period of the reference signal; and
wherein the reference signal is an uplink sounding reference signal.

### Claim 16 (depends on 15)

The non-transitory storage medium of claim 15, wherein relations between the period of the reference signal and the slot offset of the reference signal further comprise at least one of:
when the period of the reference signal is 2, the slot offset of the reference signal is an integer greater than or equal to 0 and less than or equal to 1;
when the period of the reference signal is 4, the slot offset of the reference signal is an integer greater than or equal to 0 and less than or equal to 3;
when the period of the reference signal is 5, the slot offset of the reference signal is an integer greater than or equal to 0 and less than or equal to 4;
when the period of the reference signal is 8, the slot offset of the reference signal is an integer greater than or equal to 0 and less than or equal to 7;
when the period of the reference signal is 10, the slot offset of the reference signal is an integer greater than or equal to 0 and less than or equal to 9;
when the period of the reference signal is 16, the slot offset of the reference signal is an integer greater than or equal to 0 and less than or equal to 15;
when the period of the reference signal is 20, the slot offset of the reference signal is an integer greater than or equal to 0 and less than or equal to 19;
when the period of the reference signal is 32, the slot offset of the reference signal is an integer greater than or equal to 0 and less than or equal to 31;
when the period of the reference signal is 40, the slot offset of the reference signal is an integer greater than or equal to 0 and less than or equal to 39;
when the period of the reference signal is 64, the slot offset of the reference signal is an integer greater than or equal to 0 and less than or equal to 63;
when the period of the reference signal is 80, the slot offset of the reference signal is an integer greater than or equal to 0 and less than or equal to 79;
when the period of the reference signal is 160, the slot offset of the reference signal is an integer greater than or equal to 0 and less than or equal to 159;
when the period of the reference signal is 320, the slot offset of the reference signal is an integer greater than or equal to 0 and less than or equal to 319; or
when the period of the reference signal is 640, the slot offset of the reference signal is an integer greater than or equal to 0 and less than or equal to 639.