PATH PROCESSING METHOD AND APPARATUS AND COMMUNICATION SYSTEM

1 . A path processing apparatus, applicable to a remote terminal equipment configured with an indirect path, the apparatus comprising:

a first receiver configured to receive first indication information transmitted by a network device, the first indication information comprising an indication for adding or changing a direct path in addition to the indirect path; and

first processor circuitry configured to initiate RRC reestablishment when a direct path is added or changed according to the first indication information and the adding or changing a direct path fails.

2 . The apparatus according to claim 1 , wherein the first processor circuitry initiates RRC reestablishment by using a configuration before the first indication information is received or a default configuration.

3 . The apparatus according to claim 2 , wherein in a case where the first indication information comprises an indication for adding a direct path, the configuration before the first indication information is received comprises: a configuration in communicating with the network device by using an indirect path; and

in a case where the first indication information comprises an indication for changing a direct path, the configuration before the first indication information is received comprises: a configuration in communicating with the network device by using a direct path and/or an indirect path.

4 . The apparatus according to claim 1 , wherein the first receiver is further configured to receive configuration information, the configuration information comprising configuration of an indirect path; and

the first processor circuitry initiates RRC reestablishment by using the configuration of the indirect path.

5 . The apparatus according to claim 1 , wherein,

the first processor circuitry is configured to initiate cell selection or relay terminal equipment selection in a case where an RRC reestablishment procedure is initiated.

6 . A path processing apparatus, applicable to a network device, the apparatus comprising:

a first transmitter configured to transmit first indication information to a remote terminal equipment, the first indication information comprising an indication for adding or changing a direct path; and

a second receiver configured to receive an RRC reestablishment request message or failure information transmitted by the remote terminal equipment in adding or changing a direct path according to the first indication information and the adding or changing a direct path fails.

7 . The apparatus according to claim 6 , wherein the second receiver is configured to,

in a case where the first indication information comprises an indication for adding a direct path, receive via an indirect path the RRC reestablishment request message or failure information transmitted by the remote terminal equipment in adding a direct path according to the first indication information and the adding a direct path fails, and

in a case where the first indication information comprises an indication for changing a direct path, receive via a direct path and/or an indirect path the RRC reestablishment request message or failure information transmitted by the remote terminal equipment in changing a direct path according to the first indication information and the changing a direct path fails.

8 . The apparatus according to claim 6 , wherein the second receiver is further configured to receive the RRC reestablishment request message or failure information by using a configuration before the remote terminal equipment receives the first indication information or a default configuration.

9 . The apparatus according to claim 6 , wherein the first transmitter is further configured to transmit configuration information to the remote terminal equipment, the configuration information comprising a configuration of an indirect path; and

the second receiver is further configured to receive the RRC reestablishment request message or failure information by using the configuration of the indirect path.

10 . A path processing apparatus, applicable to a remote terminal equipment, the apparatus comprising:

first communication processor circuitry configured to:

communicate with a network device via a direct path and an indirect path; and

receive a Radio Resource Control (RRC) reconfiguration message for path switching transmitted by the network device for releasing the direct path, the message comprising a configuration of the indirect path;

first releasing processor circuitry configured to release the direct path according to the message for releasing the direct path.

11 . The apparatus according to claim 10 , wherein a serving cell of a relay terminal equipment on the indirect path comprises a primary cell (PCell) or a secondary cell (SCell) or a primary SCG cell (PSCell) of the relay terminal equipment.