Security parameter transmission method and related device

Patent metadata

Field	Value
Publication number	US-2019021123-A1
Application number	US-201816045572-A
Country	US
Kind code	A1
Filing date	Jul 25, 2018
Priority date	Feb 4, 2016
Publication date	Jan 17, 2019
Grant date	—

Abstract

A security parameter transmission method and related devices are disclosed for resolving a transmission problem of a security parameter required for secure communication between a remote device and a cellular network. For the method, a radio resource connection signaling is received by a network side device, which is sent by a first terminal device. The first terminal device implements a relay function, and the radio resource connection management signaling is sent by a second terminal device to the first terminal device. An identifier of the second terminal device that generates the radio resource connection management signaling is determined, and obtains a security parameter corresponding to the identifier of the second terminal device. The network side device sends the obtained security parameter to the second terminal device by using the first terminal device.

First claim

What is claimed is:

1 . A communication method, comprising:
receiving, by a network side device, radio resource connection management signaling sent by a first terminal device, wherein the first terminal device implements a relay function, and the radio resource connection management signaling is sent by a second terminal device to the first terminal device; determining, by the network side device, an identifier of the second terminal device that generates the radio resource connection management signaling, and obtaining a security parameter corresponding to the identifier of the second terminal device; and sending, by the network side device, the obtained security parameter to the second terminal device by using the first terminal device.

2 . The method according to claim 1 , wherein the radio resource connection management signaling includes the identifier of the second terminal device.

3 . The method according to claim 1 , wherein the determining, by the network side device, an identifier of the second terminal device that generates the radio resource connection management signaling comprises:
determining, by the network side device, an identifier of a dedicated radio bearer for transmitting the radio resource connection management signaling, and determining, based on a correspondence between an identifier of a dedicated radio bearer and an identifier of a second terminal device, that an identifier of a second terminal device corresponding to the identifier of the dedicated radio bearer for transmitting the radio resource connection management signaling is the identifier of the second terminal device that generates the radio resource connection management signaling, wherein the dedicated radio bearer is a radio bearer between the network side device and the first terminal device; or obtaining, by the network side device, signaling source indication information carried in the radio resource connection management signaling, determining, based on the signaling source indication information, that the radio resource connection management signaling is generated by the second terminal device, and determining the identifier of the second terminal device based on the radio resource connection management signaling, wherein the signaling source indication information is used to indicate that the radio resource connection management signaling is generated by the second terminal device.

4 . The method according to claim 3 , wherein before the receiving, by a network side device, radio resource connection management signaling sent by a first terminal device, the method further comprises:
sending, by the network side device, radio bearer configuration signaling to the first terminal device, wherein the radio bearer configuration signaling comprises at least the identifier of the dedicated radio bearer that is to be configured for transmitting the radio resource connection management signaling of the second terminal device; and receiving, by the network side device, radio bearer configuration complete signaling returned by the first terminal device, wherein the radio bearer configuration complete signaling is used to indicate that configuration of the dedicated radio bearer for transmitting the radio resource connection management signaling of the second terminal device is completed.

5 . The method according to claim 1 , wherein the sending, by the network side device, the obtained security parameter to the second terminal device by using the first terminal device comprises:
generating, by the network side device, a secure transmission mode request, wherein the secure transmission mode request carries the security parameter; and sending, by the network side device, the secure transmission mode request to the first terminal device, so that the first terminal device forwards the secure transmission mode request to the second terminal device.

6 . A communication method comprising:
determining, by a first terminal device, that a destination of radio resource connection management signaling of a second terminal device is a network side device, and then sending the radio resource connection management signaling to the network side device, wherein the first terminal device has a relay function; and receiving, by the first terminal device, a security parameter returned by the network side device based on the radio resource connection management signaling, and forwarding the security parameter to the second terminal device, wherein the security parameter is obtained by the network side device based on an identifier of the second terminal device after the network side device determines the identifier of the second terminal device that generates the radio resource connection management signaling.

7 . The method according to claim 6 , wherein the radio resource connection management signaling carries the identifier of the second terminal device.

8 . The method according to claim 6 , wherein the determining, by a first terminal device, that a destination of radio resource connection management signaling of a second terminal device is a network side device comprises:
if determining to receive, by using a dedicated air interface resource, the radio resource connection management signaling sent by the second terminal device, determining, by the first terminal device, that the destination of the radio resource connection management signaling is the network side device, wherein the dedicated air interface resource is used to instruct the first terminal device to forward signaling of the second terminal device to the network side device; or determining, by the first terminal device, that the radio resource connection management signaling carries forwarding instruction information, and determining, based on the forwarding instruction information, that the destination of the radio resource connection management signaling is the network side device, wherein the forwarding instruction information is used to instruct to forward signaling of the second terminal device to the network side device.

9 . The method according to claim 6 , wherein the sending, by a first terminal device, the radio resource connection management signaling to the network side device comprises:
determining, by the first terminal device based on a correspondence between an identifier of a second terminal device and an identifier of a dedicated radio bearer, an identifier of a dedicated radio bearer corresponding to the identifier of the second terminal device that generates the radio resource connection management signaling, and sending the radio resource connection management signaling to the network side device based on the identifier of the dedicated radio bearer, wherein the dedicated radio bearer is a radio bearer between the network side device and the first terminal device; or sending, by the first terminal device, the radio resource connection management signaling to the network side device after adding signaling source indication information to the radio resource connection management signaling, wherein the signaling source indication information is used to indicate that the radio resource connection management signaling is generated by the second terminal device.

10 . The method according to claim 6 , wherein the receiving, by the first terminal device, a security parameter returned by the network side device based on the radio resource connection management signaling, and forwarding the security parameter to the second terminal device comprises:
receiving, by the first terminal device, a secure transmission mode request returned by the network side device, wherein the secure transmission mode request carries the security parameter; and forwardin

Assignees

• Huawei Tech Co Ltd

Inventors

• Ma Jie
• Lin Bo

Classifications

• H04W12/02

  Protecting privacy or anonymity, e.g. protecting personally identifiable information [PII] · CPC title

• H04W12/10

  Integrity · CPC title

• H04W76/14

  Direct-mode setup · CPC title

• H04B7/155

  Ground-based stations (H04B7/204 takes precedence) · CPC title

• H04L2209/80

  Wireless · CPC title