Mobility optimization method and related apparatus
A mobility optimization method and a related apparatus are provided. The method includes: determining connection failure information; and sending the connection failure information and an identifier of a first cell to a first network device by using a radio resource control (RRC) message, wherein the identifier of the first cell comprises an identifier of a cell from which a reconfiguration message or a handover command message received by the terminal device comes or an identifier of a cell in which a connection failure occurs, wherein the connection failure information is in a form of a container in the RRC message and the identifier of the first cell is outside the container.
1 . A communication method, performed by a terminal device or a chip for the terminal device, the communication method comprising:
accessing a third cell of a first network device; and
sending connection failure information and an identifier of a first cell to the first network device using a radio resource control (RRC) message, wherein the first cell is a cell from which the terminal device receives a reconfiguration message or a handover command message and a handover failure occurs in a procedure in which the terminal device attempts to be handed over from the first cell of a source network device to a second cell of a target network device, or the first cell is a cell in which a radio link failure occurs on the terminal device, wherein
the first cell uses a first radio access technology, the second cell and the third cell use a second radio access technology different from the first radio access technology, the connection failure information is in a form of a container in the RRC message, and the identifier of the first cell is outside the container, and wherein the following is also carried in the RRC message and also outside the container:
type information of the first cell, wherein the type information indicates that the first cell is a long term evolution (LTE) cell, an eLTE cell, or a new radio (NR) cell.
2 . The method according to claim 1 , wherein the second radio access technology is new radio (NR), and the first radio access technology is evolved universal terrestrial radio access (E-UTRA).
3 . The method according to claim 1 , wherein the identifier of the first cell comprises a cell global identifier (CGI).
4 . The communication method according to claim 1 , wherein the following is also carried in the RRC message and also outside the container: a tracking area code (TAC) of the first cell.
5 . A communication method, performed by a first network device or a chip for the first network device, the communication method comprising:
receiving a radio resource control (RRC) message from a terminal device after the terminal device accesses a third cell of the first network device, wherein the RRC message comprises connection failure information and an identifier of a first cell, and the first cell is a cell from which a reconfiguration message or a handover command message is sent to the terminal device and a handover failure occurs in a procedure in which the terminal device attempts to be handed over from the first cell of a source network device to a second cell of a target network device or the first cell is a cell in which a connection failure of the terminal device occurs; and
determining the identifier of the first cell based on the RRC message, wherein
the first cell uses a first radio access technology, the second cell and the third cell use a second radio access technology different from the first radio access technology, the connection failure information is in a form of a container in the RRC message, and the identifier of the first cell is outside the container, and wherein the following is also carried in the RRC message and also outside the container:
type information of the first cell, wherein the type information indicates that the first cell is a long term evolution (LTE) cell, an eLTE cell, or, a new radio (NR) cell.
6 . The method according to claim 5 , further comprising:
sending, to a second network device through an interface between the first network device and the second network device, the connection failure information and information indicating a radio access technology of an RRC format of the connection failure information, the RRC format being used by the connection failure information, wherein the second network device manages the first cell.
7 . The method according to claim 5 , further comprising:
sending, to a second network device through a core network device, the connection failure information and information indicating a radio access technology of an RRC format that is used by the connection failure information, wherein the second network device manages the first cell.
8 . The method according to claim 5 , wherein the identifier of the first cell comprises a cell global identifier (CGI).
9 . The method according to claim 5 , wherein the second radio access technology is new radio (NR) and the first radio access technology is evolved universal terrestrial radio access (E-UTRA).
10 . The communication method according to claim 5 , wherein the following is also carried in the RRC message and also outside the container: a tracking area code (TAC) of the first cell.
11 . An apparatus, wherein the apparatus is a terminal device, or a chip or a circuit disposed in the terminal device, and the apparatus comprises at least one processor and a memory, wherein the memory stores a computer program, the computer program comprises program instructions, and when the at least one processor runs the program instructions, the apparatus is enabled to perform:
accessing a third cell of a first network device; and
sending connection failure information and an identifier of a first cell to the first network device using a radio resource control (RRC) message, wherein the first cell is a cell from which the terminal device receives a reconfiguration message or a handover command message and a handover failure occurs in a procedure in which the terminal device attempts to be handed over from the first cell of a source network device to a second cell of a target network device, or the first cell is a cell in which a connection failure of the terminal device occurs, wherein
the first cell uses a first radio access technology, the second cell and the third cell use a second radio access technology different from the first radio access technology, the connection failure information is in a form of a container in the RRC message, and the identifier of the first cell is outside the container, and wherein the following is also carried in the RRC message and also outside the container:
type information of the first cell, wherein the type information indicates that the first cell is a long term evolution (LTE) cell, an eLTE cell, or a new radio (NR) cell.
12 . The apparatus according to claim 11 , wherein the second radio access technology is new radio (NR), and the first radio access technology is evolved universal terrestrial radio access (E-UTRA).
13 . The apparatus according to claim 11 , wherein the identifier of the first cell comprises a cell global identifier (CGI).
14 . The apparatus according to claim 11 , wherein the following is also carried in the RRC message and also outside the container: a tracking area code (TAC) of the first cell.
15 . An apparatus, wherein the apparatus is a first network device, or a chip or a circuit disposed in the first network device, and the apparatus comprises at least one processor configured to perform:
receiving a radio resource control (RRC) message from a terminal device after the terminal device accesses a third cell of the first network device, wherein the RRC message comprises connection failure information and an identifier of a first cell, and the first cell is a cell from which a reconfiguration message or a handover command message is sent to the terminal device and a handover failure occurs in a procedure in which the terminal device attempts to be handed over from the first cell of a source network device to a second cell of a target network device or the first cell is a cell in which a connection failure of the terminal device occurs; and
determining the identifier of the first cell based on the RRC message, wherein
the first cell uses a first radio access technology, the second cell and the third cell uses a second radio access technology different from the first radio access technology, the connection failure information is in a form of a container in the RRC message, and the identifier of the first cell is outside the container, and wherein the following is also carried in the RRC message and also outside the container:
type information of the first cell, wherein the type information indicates that the first cell is a long term evolution (LTE) cell, an eLTE cell, or, a new radio (NR) cell.
16 . The apparatus according to claim 15 , wherein the apparatus is further enabled to perform:
sending, to a second network device through an interface between the first network device and the second network device, or, through a core network device, the connection failure information and information indicating a radio access technology of an RRC format of the connection failure information, the RRC format being used by the connection failure information, wherein the second network device manages the first cell.
17 . The apparatus according to claim 15 , wherein the identifier of the first cell comprises a cell global identifier (CGI).
18 . The apparatus according to claim 15 , wherein the second radio access technology is new radio (NR) and the first radio access technology is evolved universal terrestrial radio access (E-UTRA).
19 . The apparatus according to claim 15 , wherein the following is also carried in the RRC message and also outside the container: a tracking area code (TAC) of the first cell.