Extensions of WUS for paging for RRC inactive

1 . A user equipment, comprising: at least one processor; and

at least one memory storing instructions that, when executed by the at least one processor, cause the user equipment at least to:

detect a wake-up signal related message format comprising control information, wherein the user equipment is in a radio resource control inactive state; and

based on the detected message format, perform operations to initiate a connection resume procedure in a communication network,

wherein the control information of the message format is using a subset of information to provide an uplink grant for use by the user equipment in the radio resource control inactive state to initiate the connection resume procedure in the communication network,

wherein the subset of information of the message format is received over a downlink control information format,

wherein the downlink control information format comprises a downlink control information format 0, a downlink control information format 1, and a downlink control information format 2_6,

wherein the message format comprises an indication of a network device specific identifier and a group specific identifier,

wherein the user equipment is further caused to:

trigger the connection resume operation in response to the message format being targeted to a configured network device specific identifier and a configured group specific identifier associated with the user equipment,

wherein the user equipment is further caused to:

determine a timing advance validity based on reception of the message format,

wherein the message format indicating the activation of preconfigured uplink radio resources is determined to be applicable to the user equipment based on determining the timing advance validity,

wherein the determining the timing advance validity is based on at least comparing characteristics of the message as received to one or more previous valid messages, wherein the comparing is comparing at least one of a signal strength or a timing of the message as received to the one or more previous valid messages for the network device, wherein the comparing is based on comparing a timing of reception of the message as received to an estimate of timing for a message occasion associated with the wake-up signal.

2 . The user equipment of claim 1 , wherein the wake up signal-triggered activation of preconfigured uplink resources is applicable only if the user equipment has a valid timing advance, and the user equipment is further caused to:

determine whether the timing advance is valid based on one of reception of the wake up signal which is monitored in RRC INACTIVE or the timing of the reception of the wake up signal as compared to an estimate of the timing of the wake up signal occasion, wherein the wake up signal indicates both a configured power saving-radio network temporary identifier, which is group-specific, and an inactive-radio network temporary identifier.

3 . The user equipment of claim 2 , wherein the user equipment is further caused to trigger a connection resume only if the wake up signal is targeted to the configured power saving-radio network temporary identifier and inactive-radio network temporary identifier.

4 . The user equipment of claim 1 , wherein for a case wherein the operations to initiate the connection resume procedure comprise a random access procedure, the message format indicates contention free random access resources for the user equipment, wherein the contention free random access resources are using a 4-step contention free random access preamble or a 2-step contention free random access Message A including a preamble and a physical uplink shared channel, and there is decoding of a Message B radio network temporary identifier for one of a fallback random access response or a success random access response.

5 . The user equipment of claim 4 , wherein if the 2-step contention free random access Message A was used, then the user equipment is further caused to attempt to decode the Message B radio network temporary identifier for either for fallback re-authorization request or for success re-authorization request, wherein the message format comprises an indication of at least one beam in which uplink resources are valid for the connection resume procedure in the communication network, wherein the at least one beam comprises at least one synchronization signal block or channel-state information reference signal beam, and wherein a reference signal received power threshold is configured in system information or dedicated signalling based on the at least one beam.

6 . A method, comprising:

detecting, by a user equipment of a communication network, a wake-up signal related message format comprising control information, wherein the network device is in a radio resource control inactive state; and

based on the detected message format, performing operations to initiate a connection resume procedure in the communication network,

wherein the control information of the message format is using a subset of information to provide an uplink grant for use by the user equipment in the radio resource control inactive state to initiate the connection resume procedure in the communication network,

wherein the subset of information of the message format is received over a downlink control information format,

wherein the downlink control information format comprises a downlink control information format 0, a downlink control information format 1, and a downlink control information format 2_6,

wherein the message format comprises an indication of a network device specific identifier and a group specific identifier,

wherein the message format comprises an indication of a network device specific identifier and a group specific identifier,

wherein the message format further comprises an activation of preconfigured uplink radio resources for use to perform operations to initiate the connection resume procedure in the communication network,

wherein the method further comprises:

triggering the connection resume operation in response to the message format being targeted to a configured network device specific identifier and a configured group specific identifier associated with the user equipment,

wherein the method further comprises:

determining a timing advance validity based on reception of the message format,

wherein the message format indicating the activation of preconfigured uplink radio resources is determined to be applicable to the user equipment based on determining the timing advance validity,

wherein the determining the timing advance validity is based on at least comparing characteristics of the message as received to one or more previous valid messages, wherein the comparing is comparing at least one of a signal strength or a timing of the message as received to the one or more previous valid messages for the network device, wherein the comparing is based on comparing a timing of reception of the message as received to an estimate of timing for a message occasion associated with the wake-up signal.

7 . The method of claim 6 , wherein the control information of the message format is using a subset of information to provide an uplink grant for use by the network device in the radio resource control inactive state to initiate the connection resume procedure in the communication network.