Light connectivity and autonomous mobility

Abstract

Light and/or Inactive state connectivity and/or autonomous mobility techniques are contemplated. A WTRU may, for example, have an inactive/idle mode, a light connected/loosely connected/Inactive mode and/or a connected/fully connected/Active mode. A WTRU in light connected mode may have a WTRU context stored in a RAN. A WTRU may perform an area monitoring procedure while in light connected state. A WTRU may engage in autonomous mobility during light connectivity. A WTRU may move within a logical area (e.g., a RAN paging area), perhaps without notifying the network. The WTRU may provide notice when it has moved outside a logical area (e.g., update RAN paging area). Mobility in light connected state may be network controlled (e.g., to enable handover when data transfer may be allowed and/or ongoing). A WTRU may be reachable during a light connectivity state. A WTRU may engage in autonomous mobility during light connectivity and/or an Inactive state.

What is claimed is: 
     
         1 - 53 . (canceled) 
     
     
         54 . A wireless transmit/receive unit (WTRU) comprising a receiver, a transmitter, and a processor, wherein:
 the receiver is configured while in a radio resource control (RRC) Connected state to: 
 receive, from a network entity, (i) an indication to the WTRU to transition to a RRC Inactive state and (ii) any one or more of an indication of (a) one or more logical channels (LCHs) or (b) one or more radio bearers that are configured for uplink (UL) transmission while the WTRU is in the RRC Inactive state; 
   the processor is configured to: 
 transition the WTRU from the RRC Connected state to the RRC Inactive state; and 
   the transmitter is configured to: 
 in accordance with (1) the WTRU being in the RRC Inactive state, (2) UL data associated with the indicated one or more LCHs or radio bearers becoming available for transmission, and (3) the UL data satisfying a criterion that a total amount of the UL data is less than a threshold, transmit the UL data, while remaining in the RRC Inactive state. 
   
     
     
         55 . The WTRU of  claim 54 , wherein the transmitter is further configured to: transmit an identity of the WTRU while in the RRC Inactive state. 
     
     
         56 . The WTRU of  claim 54 , wherein the transmitter is further configured to:
 on condition that the WTRU is in the RRC Inactive state, and UL data associated with a LCH not among the indicated one or more LCHs becomes available for transmission, transmit an identity of the WTRU and an RRC message to request the WTRU to transition back to the RRC Connected state.   
     
     
         57 . The WTRU of  claim 54 , wherein the transmitter is further configured to:
 on condition that the WTRU is in the RRC Inactive state, and UL data associated with a radio bearer not among the indicated one or more radio bearers becomes available for transmission, transmit an identity of the WTRU and an RRC message to request the WTRU to transition back to the RRC Connected state.   
     
     
         58 . The WTRU of  claim 54 , wherein the transmitter is configured to:
 on condition that the WTRU is in the RRC Inactive state, and UL data associated with any one or more of 1) the indicated one or more LCHs or 2) the indicated one or more radio bearers becomes available for transmission, and the UL data is greater than the threshold, transmit a RRC message to request the WTRU to transition back to the RRC Connected state.   
     
     
         59 . The WTRU of  claim 58 , wherein the transmitter is further configured to: transmit an identity of the WTRU while in the RRC Inactive state. 
     
     
         60 . The WTRU of  claim 54 , wherein the UL data is in a buffer of the WTRU when becoming available for transmission. 
     
     
         61 . The WTRU of  claim 54 , wherein the UL data further satisfies a criterion that a size of an available UL grant can accommodate the total amount of the UL data. 
     
     
         62 . The WTRU of  claim 54 , wherein the processor is further configured to monitor a control channel for a time duration after the UL data is transmitted in the RRC Inactive state. 
     
     
         63 . A method used by a wireless transmit/receive unit (WTRU) for wireless communications, the method comprising:
 receiving, from a network entity, while in a radio resource control (RRC) Connected state, (i) an indication to the WTRU to transition to a RRC Inactive state and (ii) any one or more of an indication (a) of one or more logical channels (LCHs) or (b) one or more radio bearers that are configured for uplink (UL) transmission while the WTRU is in the RRC Inactive state;   transitioning the WTRU from the RRC Connected state to the RRC Inactive state; and   in accordance with (1) the WTRU being in the RRC Inactive state, (2) UL data associated with the indicated one or more LCHs or radio bearers becoming available for transmission, and (3) the UL data satisfying a criterion that a total amount of the UL data is less than a threshold, transmitting the UL data while remaining in the RRC Inactive state.   
     
     
         64 . The method of  claim 63 , further comprising:
 transmitting an identity of the WTRU while in the RRC Inactive state.   
     
     
         65 . The method of  claim 63 , further comprising:
 on condition that the WTRU is in the RRC Inactive state, and UL data associated with a LCH not among the indicated one or more LCHs becomes available for transmission, transmitting an identity of the WTRU and an RRC message to request the WTRU to transition back to the RRC Connected state.   
     
     
         66 . The method of  claim 63 , further comprising:
 on condition that the WTRU is in the RRC Inactive state, and UL data associated with a radio bearer not among the indicated one or more radio bearers becomes available for transmission, transmitting an identity of the WTRU and an RRC message to request the WTRU to transition back to the RRC Connected state.   
     
     
         67 . The method of  claim 63 , further comprising:
 on condition that the UL data associated with any one or more of 1) the indicated one or more LCHs or 2) the indicated one or more radio bearers becomes available for transmission, and the UL data is greater than the threshold, transmitting a RRC message to request the WTRU to transition back to the RRC Connected state.   
     
     
         68 . The method of  claim 67 , further comprising:
 transmitting an identity of the WTRU while in the RRC Inactive state.   
     
     
         69 . The method of  claim 63 , wherein the UL data is in a buffer of the WTRU when becoming available for transmission. 
     
     
         70 . The method of  claim 63 , wherein the UL data further satisfies a criterion that a size of an available UL grant can accommodate the total amount of the UL data. 
     
     
         71 . The method of  claim 63 , further comprising:
 monitoring of a control channel for a time duration after the UL data is transmitted in the RRC Inactive state.