Enhanced node B and methods for providing system information updates to user equipment with extended paging cycles
First Claim
1. An apparatus of a user equipment (UE), the apparatus comprising:
- a memory configured to store information as stored system information; and
processing circuitry in communication with the memory and arranged to;
decode system information that comprises parameters for an extended discontinuous reception (eDRX) cycle and parameters for deriving Paging Occasions (POs);
monitor one of the POs for a paging message;
when a paging message for the UE received during the one of the POs comprises a systemInfoModification-eDRX parameter and the eDRX cycle is longer than a modification period during which notification of a system information change is provided, acquire new system information that comprises a master information block (MIB) and a plurality of system information blocks (SIBs) at a next opportunity;
replace the stored system information with the new system information; and
delay initiation of a radio resource control (RRC) connection procedure until after the MIB and the plurality of SIBs are acquired,wherein the modification period in radio frames is proportional to a default paging cycle that indicates a number of radio frames over which a paging cycle comprising the POs occurs.
0 Assignments
0 Petitions
Accused Products
Abstract
Embodiments of an enhanced Node B (eNB) and method to provide system information (SI) updates to user equipment (UE) in sleep or idle mode with an extending paging cycle are generally described herein. In some embodiments, a paging message configured to include an optional field to indicate whether there has been a system information (SI) update since a last paging occasion for a UE in sleep or idle mode with an extending paging cycle. System information updates are transmitted by the eNB during a system information modification period that is shorter than a period the extending paging cycle. The optional field may indicate whether or not the UE is to acquire the latest SI update during the current paging occasion.
91 Citations
23 Claims
-
1. An apparatus of a user equipment (UE), the apparatus comprising:
-
a memory configured to store information as stored system information; and processing circuitry in communication with the memory and arranged to; decode system information that comprises parameters for an extended discontinuous reception (eDRX) cycle and parameters for deriving Paging Occasions (POs); monitor one of the POs for a paging message; when a paging message for the UE received during the one of the POs comprises a systemInfoModification-eDRX parameter and the eDRX cycle is longer than a modification period during which notification of a system information change is provided, acquire new system information that comprises a master information block (MIB) and a plurality of system information blocks (SIBs) at a next opportunity; replace the stored system information with the new system information; and delay initiation of a radio resource control (RRC) connection procedure until after the MIB and the plurality of SIBs are acquired, wherein the modification period in radio frames is proportional to a default paging cycle that indicates a number of radio frames over which a paging cycle comprising the POs occurs. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. An apparatus of an evolved NodeB (eNB), the apparatus comprising:
-
processing circuitry arranged to; generate a notification of a change in system information for transmission in a first modification period and updated system information in a second modification period following the first modification period; determine whether at least one user equipment (UE) in idle or sleep mode has an extended discontinuous reception cycle (eDRX) that is longer than the first modification period; in response to a determination that the at least one UE has an eDRX that is longer than the first modification period, generate a paging message for the at least one UE in a paging occasion of the at least one UE, the paging message comprising a systemInfoModification-eDRX parameter that indicates that a system information update has occurred during the eDRX; generate updated system information for broadcast after transmission of the paging message, the updated system information comprising a master information block (MIB) and a plurality of system information blocks (SIBs); and engage in a radio resource control (RRC) connection procedure with the at least one UE after the MIB and the plurality of SIBs are transmitted, wherein the modification period in radio frames is proportional to a default paging cycle that indicates a number of radio frames over which a paging cycle comprising the POs occurs; and a memory configured to store the determination that the at least one UE has an eDRX that is longer than the first modification period. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
-
-
20. A non-transitory computer-readable storage medium that stores instructions for execution by one or more processors of a user equipment (UE), the one or more processors to configure the UE to:
-
enter one of a sleep mode or an idle mode with an extended discontinuous reception cycle (eDRX) that is longer than a modification period throughout which a change in system information is transmitted by an evolved NodeB (eNB); determine, after having exited the one of the sleep mode or idle mode, whether a paging message received during a paging occasion comprises a systemInfoModification-eDRX parameter; in response to a determination that the paging message received during the paging occasion comprises a systemInfoModification-eDRX parameter, obtain system information that comprises a master information block (MIB) and a plurality of system information blocks (SIBs); determine that previously stored system information is invalid through a determination that a systemInfoValueTag parameter of the previously stored system information is different from a systemInfoValueTag parameter of the system information obtained after reception of the paging message; in response to a determination that the previously stored system information is invalid, replace previously stored system information with the system information obtained after reception of the paging message; and perform a radio resource control (RRC) connection procedure after replacement of the previously stored system information with the system information obtained after reception of the paging message, wherein the modification period in radio frames is proportional to a default paging cycle that indicates a number of radio frames over which a paging cycle comprising the POs occurs. - View Dependent Claims (21, 22, 23)
-
Specification