Positioning apparatus and method

1. A positioning apparatus, comprising:

a memory, configured to store information that comprises a program instruction;

a transceiver, configured to:

send auxiliary data information to a terminal for enabling the terminal to perform a reference signal time difference (RSTD) measurement on each positioning node of a same cell, wherein the auxiliary data information comprises an identity of the each positioning node of the same cell, the identity is configured to distinguish different positioning nodes belong to the same cell, and

receive an RSTD measurement result sent by the terminal; and

a processor coupled to the transceiver and to the memory, and configured to control execution of the program instruction, and configured to determine a location of the terminal by a predetermined algorithm and the received RSTD measurement result.

2. The positioning apparatus according to claim 1 , wherein the auxiliary data information further comprises:

reference signal information of the each positioning node of the same cell and a correspondence between the identity of each positioning node and the reference signal information, and wherein the reference signal information of the each positioning node of the same cell comprises at least one of:

reference signal sending bandwidth;

reference signal sending time;

reference signal subframe quantity;

reference signal frequency information; or

reference signal muting information.

3. A terminal, comprising:

a memory, configured to store information that comprises a program instruction;

a transceiver, configured to:

receive auxiliary data information sent by a network-side device, wherein the auxiliary data information comprises an identity of each positioning node of a same cell, the identity is configured to distinguish different positioning nodes belong to the same cell;

a processor coupled to the transceiver, and configured to:

perform, by using the auxiliary data information, a reference signal time difference (RSTD) measurement on a reference signal sent by the each positioning node of the same cell, to obtain a RSTD measurement result; and

wherein the transceiver is further configured to send the RSTD measurement result to the network-side device.

4. The terminal according to claim 3 , wherein the auxiliary data information further comprises:

reference signal information of the each positioning node of the same cell and a correspondence between the identity of the each positioning node of the same cell and the reference signal information, wherein the reference signal information of the each positioning node of the same cell comprises at least one of:

reference signal sending bandwidth;

reference signal sending time;

reference signal subframe quantity;

reference signal frequency information; or

reference signal muting information.

5. The terminal according to claim 4 , wherein:

the transceiver is further configured to:

receive, by using the auxiliary data information, the reference signal sent by the each positioning node of the same cell; and

the processor is further configured to:

determine, by using the correspondence between the identities and the reference signal information, the identity corresponding to each reference signal.

6. A positioning method, comprising:

sending, by a network-side device, auxiliary data information to a terminal for enabling the terminal to perform a reference signal time difference (RSTD) measurement on each positioning node of a same cell, and the auxiliary data information comprises an identity of the each positioning node of the same cell, the identity is configured to distinguish different positioning nodes belonging to the same cell;

receiving, by the network-side device, an RSTD measurement result sent by the terminal; and

determining, by the network-side device, a location of the terminal by a predetermined algorithm and the received RSTD measurement result.

7. The positioning method according to claim 6 , wherein the auxiliary data information further comprises:

reference signal information of the each positioning node of the same cell and a correspondence between the identity of the each positioning node of the same cell and the reference signal information, wherein the reference signal information of the each positioning node of the same cell comprises at least one of:

reference signal sending bandwidth;

reference signal sending time;

reference signal subframe quantity;

reference signal frequency information; or

reference signal muting information.

8. A positioning method, comprising:

receiving, by a terminal, auxiliary data information sent by a network-side device, wherein the auxiliary data information comprises an identity of each positioning node of a same cell, the identity is configured to distinguish different positioning nodes belonging the a same cell;

performing, by the terminal by using the auxiliary data information, a reference signal time difference (RSTD) measurement on reference signals sent by the each positioning node of the same cell, to obtain an RSTD result; and

sending, by the terminal, the RSTD measurement result to the network-side device.

9. The positioning method according to claim 8 , wherein the auxiliary data information further comprises:

reference signal information of the each positioning node of the same cell and a correspondence between the identity of the positioning node and the reference signal information, wherein the reference signal information of the each positioning node of the same cell comprises at least one of:

reference signal sending bandwidth;

reference signal sending time;

reference signal subframe quantity;

reference signal frequency information; or

reference signal muting information.

10. The positioning method according to claim 9 , wherein before performing, by the terminal by using the auxiliary data information, the RSTD measurement on the reference signal sent by the each positioning node of the same cell, to obtain the RSTD measurement result, the method further comprises:

receiving, by the terminal by using the auxiliary data information, the reference signal sent by the each positioning node of the same cell; and

determining, by the terminal by using the correspondence between the identity and the reference signal information, the identity corresponding to the reference signal.

11. A non-transitory computer-readable storage medium comprising instructions which, when executed by a computer, cause the computer to:

receive auxiliary data information sent by a network-side device, wherein the auxiliary data information comprises an identity of each positioning node of a same cell, the identity is configured to distinguish different positioning nodes belonging to the same cell;

perform, by using the auxiliary data information, a reference signal time difference (RSTD) measurement on a reference signal sent by the each positioning node of the same cell, to obtain a RSTD measurement result; and

send the RSTD measurement result to the network-side device.

12. The medium according to claim 11 , wherein the auxiliary data information further comprises:

reference signal information of the each positioning node of the same cell and a correspondence between the identity of the each positioning node of the same cell and the reference signal information, wherein the reference signal information of the each positioning node of the same cell comprises at least one of:

reference signal sending bandwidth;

reference signal sending time;

reference signal subframe quantity;

reference signal frequency information; or

reference signal muting information.

13. The positioning apparatus according to claim 1 , wherein the identity is located in a predetermined field in the auxiliary data information, the predetermined field comprising any one of the following: a cell global identity (CGI) field, an enhanced cell global identity (eCGI) field, and an index number field.

14. The positioning apparatus according to claim 3 , wherein the identity is located in a predetermined field in the auxiliary data information, the predetermined field comprising any one of the following: a cell global identity (CGI) field, an enhanced cell global identity (eCGI) field, and an index number field.

15. The positioning method according to claim 6 , wherein the identity is located in a predetermined field in the auxiliary data information, the predetermined field comprising any one of the following: a cell global identity (CGI) field, an enhanced cell global identity (eCGI) field, and an index number field.

16. The positioning method according to claim 8 , wherein the identity is located in a predetermined field in the auxiliary data information, the predetermined field comprising any one of the following: a cell global identity (CGI) field, an enhanced cell global identity (eCGI) field, and an index number field.