Random-access sending and receiving method and apparatus, transmitting end and receiving end

Patent metadata

Field	Value
Publication number	US-11272533-B2
Application number	US-201816492075-A
Country	US
Kind code	B2
Filing date	Mar 2, 2018
Priority date	Mar 6, 2017
Publication date	Mar 8, 2022
Grant date	Mar 8, 2022

Abstract

Provided are a random-access sending and receiving method and apparatus, transmitting end, receiving end, and storage medium. The random-access sending method includes: a preamble resource is acquired, and preamble information is generated; a pilot resource is determined according to the preamble resource and a user equipment identifier, and pilot information is generated; data information is acquired, and the data information is mapped to a time-frequency resource, the data information including user equipment identifier information; and a radio frame is formed from the preamble information, the pilot information and the data information, and the radio frame is sent.

First claim

What is claimed is:

1. A random-access sending method, comprising:
acquiring a preamble resource, and generating preamble information;
determining a pilot resource according to the preamble resource and a user equipment identifier, and generating pilot information;
acquiring data information, and mapping the data information to a time-frequency resource, wherein the data information comprises user equipment identifier information; and
forming a radio frame from the preamble information, the pilot information and the data information, and sending the radio frame;
wherein determining the pilot resource according to the preamble resource and the user equipment identifier comprises:

I
DMRS

=

(

⌊

I
preamble

n

p
⁢

⁢
2
⁢

⁢
d

⌋

+

(

ID
ue

)

mod
⁢

⁢

n

id
⁢

⁢
2
⁢
d

)

mod
⁢

⁢

I
DMRS
max

wherein I DMRS is an index of the pilot resource, I preamble is an index of the preamble resource, n p2d is determined according to a number of preamble resources and a number of pilot resources, ID ue is the user equipment identifier, n id2d is an offset of the pilot resource, I DMRS max is a maximum value of I DMRS , └┘ represents rounding down, and mod represents modulo operation.

2. The method according to claim 1 , wherein the preamble resource is one of a plurality of preamble resource groups in a preamble resource pool;
the pilot resource is one of a plurality of non-overlapping pilot resource groups in a pilot resource pool;
wherein determining the pilot resource according to the preamble resource and the user equipment identifier comprises:
calculating a start index of the pilot resource according to the preamble resource, determining the offset of the pilot resource according to the user equipment identifier, and determining the pilot resource according to the start index and the offset.

3. The method according to claim 2 , wherein a mapping relationship between a time-frequency resource position of the user equipment identifier information and the pilot resource is:
a frequency domain position of the user equipment identifier information is consistent with a frequency domain position of the pilot resource, and a time domain position of the user equipment identifier information is adjacent to a time domain position of the pilot resource.

4. The method according to claim 1 , wherein a mapping relationship between a time-frequency resource position of the user equipment identifier information and the pilot resource is:
a frequency domain position of the user equipment identifier information is consistent with a frequency domain position of the pilot resource, and a time domain position of the user equipment identifier information is adjacent to a time domain position of the pilot resource.

5. A non-transitory computer readable storage medium, storing computer programs, wherein the computer programs, when executed by a processor, implement steps of the method according to claim 1 .

6. A transmitting end, comprising a memory and a processor, wherein the memory stores random-access sending programs, the random-access sending programs, when read and executed by the processor, implement following operations:
acquiring a preamble resource, and generating preamble information;
determining a pilot resource according to the preamble resource and a user equipment identifier, and generating pilot information;
acquiring data information, mapping the data information to a time-frequency resource, wherein the data information comprises user equipment identifier information; and
forming a radio frame from the preamble information, the pilot information and the data information, and sending the radio frame;
wherein determining the pilot resource according to the preamble resource and the user equipment identifier comprises:

I
DMRS

=

(

⌊

I
preamble

n

p
⁢

⁢
2
⁢

⁢
d

⌋

+

(

ID
ue

)

mod
⁢

⁢

n

id
⁢

⁢
2

Assignees

• Xian Zhongxing New Software Co Ltd

Inventors

• Cao Wei
• Tian Li
• Jiao Wuchen
• Lu Tao
• Wang Sha

Classifications

• H04W74/0833 Primary

  Random access procedures, e.g. with 4-step access · CPC title

• H04W74/002 Primary

  Transmission of channel access control information · CPC title

• H04L5/0044

  Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH · CPC title

• H04L5/0051

  of dedicated pilots, i.e. pilots destined for a single user or terminal · CPC title

• H04L5/0053

  Allocation of signalling, i.e. of overhead other than pilot signals · CPC title