Handling of parameters provided in release / suspend
New Radio (NR) RRC includes an RRC_INACTIVE state, which introduces ambiguities in the network's knowledge of UE behavior. A mechanism is introduced for handling parameters received when a UE enters RRC_INACTIVE upon the UE attempting to resume an RRC connection and, as a response, receiving a Release or Suspend message. The timer associated to the mobilityControlInfo (equivalent to T 320 ) is stopped and associated parameters discarded upon receiving RRC Release or Suspend. Information received in a Release or Suspend message is discarded upon receiving RRC Release or RRC Suspend.
1. A method of managing Radio Resource Control, RRC, states, performed by a wireless device operative in a wireless communication network, the method comprising:
while in an RRC_INACTIVE state, and performing actions related to idle or inactive mobility, sending RRC signaling to the network requesting to enter an RRC_CONNECTED state;
receiving RRC signaling from the network directing the wireless device to enter an RRC_IDLE or remain in RRC_INACTIVE state; and
in response to the received RRC signaling,
discarding one or more stored dedicated idle or inactive mobility related parameters; and
discontinuing activities associated with the dedicated idle or inactive mobility related parameters; and
wherein an idle or inactive mobility related parameter is controlled by a timer, and
wherein the timer is running at the time of sending RRC signaling to the network requesting to enter an RRC_CONNECTED state, further comprising:
in response to receiving RRC signaling from the network directing the wireless device to enter an RRC_IDLE or remain in RRC_INACTIVE state, stopping the timer and discontinuing activities associated with the timer.
2. The method of claim 1 wherein performing actions related to idle or inactive mobility comprises performing cell reselection according to dedicated priorities.
3. The method of claim 2 wherein performing cell reselection according to dedicated priorities comprises performing cell reselection while a validity timer of the cell reselection priority parameter is running.
4. The method of claim 1 wherein the idle or inactive mobility related parameters comprise mobility control information.
5. The method of claim 1 wherein the idle or inactive mobility related parameters comprise redirection carrier information.
6. The method of claim 1 wherein the idle or inactive mobility related parameters comprise cell reselection priority information.
7. The method of claim 1 wherein the idle or inactive mobility related parameters comprise cell quality derivation parameters.
8. A wireless device operative to manage Radio Resource Control, RRC, states, while operative in a wireless communication network, comprising:
communication circuitry; and
processing circuitry operatively connected to the communication circuitry, and adapted to
while in an RRC_INACTIVE state, and performing actions related to idle or inactive mobility, send RRC signaling to the network requesting to enter an RRC_CONNECTED state;
receive RRC signaling from the network directing the wireless device to enter an RRC_IDLE or remain in RRC_INACTIVE state; and
in response to the received RRC signaling,
discard one or more stored dedicated idle or inactive mobility related parameters; and
discontinue activities associated with the dedicated idle or inactive mobility related parameters; and
wherein an idle or inactive mobility related parameter is controlled by a timer, and
wherein the timer is running at the time of sending RRC signaling to the network requesting to enter an RRC_CONNECTED state, wherein the processing circuitry is further adapted to:
in response to receiving RRC signaling from the network directing the wireless device to enter an RRC_IDLE or remain in RRC_INACTIVE state, stop the timer and discontinue activities associated with the timer.
9. The wireless device of claim 8 wherein the processing circuitry is adapted to perform actions related to idle or inactive mobility by performing cell reselection according to dedicated priorities.
10. The wireless device of claim 9 wherein performing cell reselection according to dedicated priorities comprises performing cell reselection while a validity timer of the cell reselection priority parameter is running.
11. The wireless device of claim 8 wherein the idle or inactive mobility related parameters comprise mobility control information.
12. The wireless device of claim 8 wherein the idle or inactive mobility related parameters comprise redirection carrier information.
13. The wireless device of claim 8 wherein the idle or inactive mobility related parameters comprise cell reselection priority information.
14. The wireless device of claim 8 wherein the idle or inactive mobility related parameters comprise cell quality derivation parameters.