Handover Procedure Using Resource Status Information
Systems, apparatuses, and methods are described for wireless communications. A first base station may send, to a second base station, a request for a resource status. The first base station may receive, from the second base station, information regarding available capacity associated with a network slice.
1 . A method comprising:
sending, by a first base station to a second base station, a request for a resource status associated with a network slice; and
receiving, by the first base station from the second base station based on the request, an indication of available capacity associated with the network slice.
2 . The method of claim 1 , wherein the request comprises at least one of:
a cell identifier of a cell of the second base station;
a network slice identifier of the network slice, wherein the network slice is associated with the cell; or
a time duration for the second base station to wait before sending the indication.
3 . The method of claim 1 , wherein the receiving the indication of the available capacity associated with the network slice comprises:
receiving, by the first base station from the second base station, a resource status message comprising the indication of the available capacity associated with the network slice, and
wherein the resource status message further indicates at least one of:
a cell identifier of a cell of the second base station;
a network slice identifier of the network slice, wherein the network slice is associated with the cell;
a network slice identifier of an accepted network slice;
a network slice identifier of a rejected network slice;
an information element indicating that a traffic load of one or more slices exceeds a threshold;
a slice reject cause value;
a handover reject cause value; or
a multi-connectivity reject cause value.
4 . The method of claim 1 , further comprising:
receiving, by the first base station from the second base station, a resource status response message indicating that a resource status measurement has been initiated.
5 . The method of claim 1 , further comprising:
sending, by the first base station to the second base station, a handover request message indicating the network slice.
6 . The method of claim 5 , wherein the sending the handover request message comprises:
determining, by the first base station based on the indication of the available capacity associated with the network slice, that the available capacity associated with the network slice is sufficient, on a cell of the second base station, for a wireless device.
7 . The method of claim 5 , wherein the handover request message comprises at least one of:
a cell identifier of a cell of the second base station;
a wireless device identifier of a wireless device;
a network slice identifier of the network slice; or
one or more packet flow identifiers of one or more packet flows associated with the network slice.
8 . A method comprising:
receiving, by a second base station from a first base station, a request for a resource status associated with a network slice; and
sending, by the second base station to the first base station based on the request, an indication of available capacity associated with the network slice.
9 . The method of claim 8 , wherein the request comprises at least one of:
a cell identifier of a cell of the second base station;
a network slice identifier of the network slice, wherein the network slice is associated with the cell; or
a time duration for the second base station to wait before sending the indication.
10 . The method of claim 8 , wherein the sending the indication of the available capacity associated with the network slice comprises:
sending, by the second base station to the first base station, a resource status message comprising the indication of the available capacity associated with the network slice, and
wherein the resource status message further indicates at least one of:
a cell identifier of a cell of the second base station;
a network slice identifier of the network slice, wherein the network slice is associated with the cell;
a network slice identifier of an accepted network slice;
a network slice identifier of a rejected network slice;
an information element indicating that a traffic load of one or more slices exceeds a threshold;
a slice reject cause value;
a handover reject cause value; or
a multi-connectivity reject cause value.
11 . The method of claim 8 , further comprising:
sending, by the second base station to the first base station, a resource status response message indicating that a resource status measurement has been initiated.
12 . The method of claim 8 , further comprising:
receiving, by the second base station from the first base station, a handover request message indicating the network slice.
13 . The method of claim 12 , wherein the handover request message comprises at least one of:
a cell identifier of a cell of the second base station;
a wireless device identifier of a wireless device;
a network slice identifier of the network slice; or
one or more packet flow identifiers of one or more packet flows associated with the network slice.
14 . The method of claim 8 , further comprising:
after a handover of a wireless device from the first base station to the second base station, communicating, by the second base station, with the wireless device via the network slice.
15 . A first base station comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, configure the first base station to:
send, to a second base station, a request for a resource status associated with a network slice; and
receive, from the second base station based on the request, an indication of available capacity associated with the network slice.
16 . The first base station of claim 15 , wherein the request comprises at least one of:
a cell identifier of a cell of the second base station;
a network slice identifier of the network slice, wherein the network slice is associated with the cell; or
a time duration for the second base station to wait before sending the indication.
17 . The first base station of claim 15 , wherein the instructions, when executed by the one or more processors, configure the first base station to receive the indication of the available capacity associated with the network slice by:
receiving, from the second base station, a resource status message comprising the indication of the available capacity associated with the network slice, and
wherein the resource status message further indicates at least one of:
a cell identifier of a cell of the second base station;
a network slice identifier of the network slice, wherein the network slice is associated with the cell;
a network slice identifier of an accepted network slice;
a network slice identifier of a rejected network slice;
an information element indicating that a traffic load of one or more slices exceeds a threshold;
a slice reject cause value;
a handover reject cause value; or
a multi-connectivity reject cause value.
18 . The first base station of claim 15 , wherein the instructions, when executed by the one or more processors, further configure the first base station to:
receive, from the second base station, a resource status response message indicating that a resource status measurement has been initiated.
19 . The first base station of claim 15 , wherein the instructions, when executed by the one or more processors, further configure the first base station to:
send, to the second base station, a handover request message indicating the network slice.
20 . The first base station of claim 19 , wherein the instructions, when executed by the one or more processors, configure the first base station to send the handover request message by:
determining, based on the indication of the available capacity associated with the network slice, that the available capacity associated with the network slice is sufficient, on a cell of the second base station, for a wireless device.
21 . The first base station of claim 19 , wherein the handover request message comprises at least one of:
a cell identifier of a cell of the second base station;
a wireless device identifier of a wireless device;
a network slice identifier of the network slice; or
one or more packet flow identifiers of one or more packet flows associated with the network slice.
22 . A second base station comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, configure the second base station to:
receive, from a first base station, a request for a resource status associated with a network slice; and
send, to the first base station based on the request, an indication of available capacity associated with the network slice.
23 . The second base station of claim 22 , wherein the request comprises at least one of:
a cell identifier of a cell of the second base station;
a network slice identifier of the network slice, wherein the network slice is associated with the cell; or
a time duration for the second base station to wait before sending the indication.
24 . The second base station of claim 22 , wherein the instructions, when executed by the one or more processors, configure the second base station to send the indication of the available capacity associated with the network slice by:
sending, to the first base station, a resource status message comprising the indication of the available capacity associated with the network slice, and
wherein the resource status message further indicates at least one of:
a cell identifier of a cell of the second base station;
a network slice identifier of the network slice, wherein the network slice is associated with the cell;
a network slice identifier of an accepted network slice;
a network slice identifier of a rejected network slice;
an information element indicating that a traffic load of one or more slices exceeds a threshold;
a slice reject cause value;
a handover reject cause value; or
a multi-connectivity reject cause value.
25 . The second base station of claim 22 , wherein the instructions, when executed by the one or more processors, further configure the second base station to:
send, to the first base station, a resource status response message indicating that a resource status measurement has been initiated.
26 . The second base station of claim 22 , wherein the instructions, when executed by the one or more processors, further configure the second base station to:
receive, from the first base station, a handover request message indicating the network slice.
27 . The second base station of claim 26 , wherein the handover request message comprises at least one of:
a cell identifier of a cell of the second base station;
a wireless device identifier of a wireless device;
a network slice identifier of the network slice; or
one or more packet flow identifiers of one or more packet flows associated with the network slice.
28 . The second base station of claim 22 , wherein the instructions, when executed by the one or more processors, further configure the second base station to:
after a handover of a wireless device from the first base station to the second base station, communicate with the wireless device via the network slice.