Communication method and device

Patent metadata

Field	Value
Publication number	US-12520203-B2
Application number	US-202318460087-A
Country	US
Kind code	B2
Filing date	Sep 1, 2023
Priority date	Mar 4, 2021
Publication date	Jan 6, 2026
Grant date	Jan 6, 2026

Abstract

This application provides a communication method and a device. The method includes: A first central unit of a network device receives first information from a terminal device, where the first information indicates a type of the terminal device. The first central unit sends second information to a first distributed unit of the network device, where the second information indicates the type of the terminal device.

First claim

What is claimed is:

1 . A communication method, comprising:
receiving, by a distributed unit of a network device, a message 1 or a message 3 from a terminal device that indicates a type of the terminal device, wherein the message 1 indicates the type of the terminal device using a time-frequency resource or a preamble codeword sequence of the message 1, or the message 3 indicates the type of the terminal device according to a logical channel identifier (LCID) field in a media access control (MAC) subheader of the message 3; and sending, by the distributed unit to a central unit of the network device, an initial uplink radio resource control message transfer message that comprises a field with second information indicating the type of the terminal device.

2 . The method according to claim 1 , wherein the type of the terminal device comprises a reduced capability terminal device or a type of reduced capability terminal device.

3 . The method according to claim 1 , further comprising controlling, by the central unit, access of the terminal device based on the second information.

4 . The method according to claim 1 , wherein the method further comprises sending, by the central unit, the second information to a third distributed unit, wherein the third distributed unit is a distributed unit to which the terminal device is handed over from the distributed unit.

5 . The method according to claim 1 , wherein the method further comprises sending, by the central unit, the second information to a third central unit, wherein the third central unit is a central unit to which the terminal device is handed over from the central unit.

6 . The method according to claim 4 , wherein the second information is used to control access of the terminal device.

7 . The method according to claim 1 , wherein the distributed unit and the central unit are separated network elements in a first network device, wherein the first network device is configured for the terminal device to access a network;
wherein a second distributed unit and a second central unit are separated network elements in a second network device, wherein the second network device is configured for the terminal device to access a network; wherein a third distributed unit and a third central unit are separated network elements in a third network device, wherein the third network device is configured for the terminal device to access a network; wherein the second distributed unit and the central unit are separated network elements in a fourth network device, wherein the fourth network device is configured for the terminal device to access a network; or wherein the third distributed unit and the central unit are separated network elements in a fifth network device, wherein the fifth network device is configured for the terminal device to access a network.

8 . A communication apparatus, comprising:
a communication interface; at least one processor; and a memory storing a program or instructions that, when executed by the at least one processor, enable the communication apparatus to perform operations comprising:
receiving a message 1 or a message 3 from a terminal device that indicates a type of the terminal device, wherein the message 1 indicates the type of the terminal device using a time-frequency resource or a preamble codeword sequence corresponding to the message 1, or the message 3 indicates the type of the terminal device according to a logical channel identifier (LCID) field in a media access control (MAC) subheader of the message 3; and
sending, to a central unit of a network device, an initial uplink radio resource control message transfer message that comprises a field with second information indicating the type of the terminal device.

9 . The communication apparatus according to claim 8 , wherein the communication apparatus is a distributed unit of a network device.

10 . A non-transitory computer-readable storage medium storing instructions that, when the instructions are run on a computer, enable the computer to perform the method according to claim 1 .

11 . A communication method, comprising:
receiving, by a central unit of a network device from a distributed unit of the network device, an initial uplink radio resource control message transfer message that comprises a field with second information indicating a type of a terminal device, wherein the type of the terminal device is indicated by a message 1 or a message 3 sent to the distributed unit from the terminal device, wherein the message 1 indicates the type of the terminal device using a time-frequency resource or a preamble codeword sequence of the message 1, or the message 3 indicates the type of the terminal device according to a logical channel identifier (LCID) field in a media access control (MAC) subheader of the message 3; and controlling, by the central unit of a network device, access of the terminal device based on the second information indicated by the initial uplink radio resource control message transfer message.

12 . The method according to claim 11 , wherein the type of the terminal device comprises a reduced capability terminal device or a type of reduced capability terminal device.

13 . The method according to claim 11 , wherein the method further comprises sending, by the central unit, the second information to a third distributed unit, wherein the third distributed unit is a distributed unit to which the terminal device is handed over from the distributed unit.

14 . The method according to claim 11 , wherein the method further comprises sending, by the central unit, the second information to a third central unit, wherein the third central unit is a central unit to which the terminal device is handed over from the central unit.

Assignees

• Huawei Tech Co Ltd

Inventors

• Kuang Yiru
• Xu Haibo
• Xue Lixia
• Kong Fanhua

Classifications

• H04W36/087

  between radio units of access points · CPC title

• H04W88/085

  Access point devices with remote components · CPC title

• H04W72/51

  based on terminal or device properties · CPC title

• H04W36/0055 Primary

  Transmission or use of information for re-establishing the radio link · CPC title

• H04W8/24 Primary

  Transfer of terminal data · CPC title