Paging adaptation in sidelink relay systems
Certain aspects of the present disclosure provide techniques for adaptive paging in sidelink relay scenarios. An example method for adaptive paging by a remote UE generally includes connecting, via a sidelink, to a relay node connected to a network entity, sending an indication of a preferred paging mode to at least one of the relay node or the network entity, and monitoring for paging in accordance with the preferred paging mode, if the UE receives signaling configuring the UE for the preferred paging mode.
1 . A method for wireless communication by a remote user equipment (UE), comprising:
connecting, via a sidelink, to a relay node connected to a network entity;
sending an indication of a preferred paging mode to at least one of the relay node or the network entity;
receiving signaling configuring the remote UE for the preferred paging mode from the network entity; and
monitoring for paging in accordance with the preferred paging mode.
2 . The method of claim 1 , wherein the preferred paging mode comprises:
a direct paging mode where the remote UE receives paging directly from the network entity; or
a forward paging mode where the remote UE receives paging forwarded from the relay node.
3 . The method of claim 1 , further comprising receiving an indication of an initial paging mode, in an initial configuration, that is different than the preferred paging mode.
4 . The method of claim 3 , wherein the indication of the initial paging mode is received in a radio resource control (RRC) reconfiguration message directly from the network entity or from the relay node.
5 . The method of claim 1 , wherein:
the remote UE sends the indication of the preferred paging mode to the relay node via a sidelink radio resource control (RRC) message; and
the relay node provides the signaling configuring the remote UE for the preferred paging mode via a sidelink RRC message.
6 . The method of claim 5 , wherein the remote UE explicitly indicates the preferred paging mode in the sidelink RRC message it sends.
7 . The method of claim 5 , wherein the remote UE provides an indication of its coverage status in the sidelink RRC message it sends.
8 . The method of claim 1 , wherein:
the remote UE sends the indication of the preferred paging mode to the network entity via a radio resource control (RRC) message; and
the network entity provides the signaling configuring the remote UE for the preferred paging mode via a sidelink RRC message.
9 . The method of claim 8 , wherein the remote UE explicitly indicates the preferred paging mode in the sidelink RRC message it sends.
10 . The method of claim 8 , wherein the remote UE provides an indication of its coverage status in the sidelink RRC message it sends.
11 . The method of claim 1 , wherein the remote UE monitors for paging according to a default paging mode if it does not receive signaling configuring the remote UE for the preferred paging mode.
12 . The method of claim 11 , wherein the default paging mode comprises a direct paging mode where the remote UE receives paging directly from the network entity.
13 . The method of claim 1 , wherein:
the relay node performs layer 3 (L3) relaying between the network entity and the remote UE; or
the relay node performs layer 2 (L2) relaying between the network entity and the remote UE.
14 . A method for wireless communication by a relay node, comprising:
connecting, via a sidelink, to a remote user equipment (UE) while the relay node is also connected to a network entity;
receiving, from the remote UE, an indication of a coverage status, the coverage status associated with a preferred paging mode;
sending to the remote UE signaling configuring the remote UE for the preferred paging mode; and
sending an indication to the network entity of the preferred paging mode of the remote UE.
15 . The method of claim 14 , wherein the preferred paging mode comprises:
a direct paging mode where the remote UE receives paging directly from the network entity; or
a forward paging mode where the remote UE receives paging forwarded from the relay node.
16 . The method of claim 14 , further comprising receiving, from the network entity, an indication of an initial paging mode for the remote UE, in an initial configuration, that is different than the preferred paging mode.
17 . The method of claim 14 , wherein:
the relay node receives the indication of the preferred paging mode from the remote UE via a sidelink radio resource control (RRC) message; and
the relay node provides the signaling configuring the remote UE for the preferred paging mode via a sidelink RRC message.
18 . The method of claim 17 , wherein the remote UE explicitly indicates the preferred paging mode in the sidelink RRC message it sends.
19 . The method of claim 17 , wherein the remote UE provides an indication of its coverage status in the sidelink RRC message it sends.
20 . The method of claim 14 , further comprising providing an indication, to the network entity, that the remote UE has been or will be configured for the preferred paging mode.
21 . A method for wireless communication by a network entity, comprising:
connecting to a relay node that is connected to a remote user equipment (UE);
receiving, from the remote UE, an indication of a preferred paging mode;
sending to the remote UE signaling configuring the remote UE for the preferred paging mode; and
paging the remote UE in accordance with the preferred paging mode.
22 . The method of claim 21 , wherein the preferred paging mode comprises:
a direct paging mode where the remote UE receives paging directly from the network entity; or
a forward paging mode where the remote UE receives paging forwarded from the relay node.
23 . The method of claim 21 , further comprising providing an indication of an initial paging mode for the remote UE, in an initial configuration, that is different than the preferred paging mode.
24 . The method of claim 23 , wherein the indication of the initial paging mode is provided in a radio resource control (RRC) reconfiguration message directly from the network entity or from the relay node.
25 . The method of claim 21 , further comprising sending, to the relay node, signaling indicating the remote UE has been or will be configured for the preferred paging mode.
26 . The method of claim 21 , wherein:
the remote UE sends the indication of the preferred paging mode to the network entity via a radio resource control (RRC) message; and
the network entity provides the signaling configuring the remote UE for the preferred paging mode via a sidelink RRC message.
27 . The method of claim 26 , wherein the remote UE explicitly indicates the preferred paging mode in the sidelink RRC message it sends.
28 . The method of claim 26 , wherein the remote UE provides an indication of its coverage status in the sidelink RRC message it sends.
29 . An apparatus for wireless communication by a remote user equipment (UE), comprising:
one or more memories comprising instructions; and
one or more processors, individually or collectively, configured to execute the instructions and cause the apparatus to:
connect, via a sidelink, to a relay node connected to a network entity;
send an indication of a preferred paging mode to at least one of the relay node or the network entity;
receive signaling configuring the remote UE for the preferred paging mode from the network entity; and
monitor for paging in accordance with the preferred paging mode.