Efficient sleep mode operation for OFDMA systems
AssigneeQUALCOMM Incorporated
InventorsRavi Palanki, Jeremy H. Lin, Hemanth Sampath
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Abstract
A communications system and method for a wireless mobile device is provided. The method includes performing sleep mode operations in a device and performing wake-up operations with one or more base stations in view of the sleep mode operations in the device. The method also includes demodulating a communications channel for the device during sleep mode operations in the device and prior to synchronizing with the base stations.
Claims38
A communications method for a wireless mobile device, comprising:
- performing sleep mode operations in a device;
- performing wake-up operations with one or more base stations in view of the sleep mode operations in the device;
- demodulating a communications channel for the device during the sleep mode operations in the device prior to synchronizing with the one or more base stations and based on at least one prior wake-up operation;
- and
- demodulating a paging channel signal employing at least one of a sector in a previous wake-up slot and a strongest sector observed via acquisition.
A communications apparatus, comprising:
- a memory that retains instructions for switching between sleep mode operations and wake-up operations in a device, wherein the instructions are configured to demodulate a communications channel for the device during sleep mode operations in the device prior to chip level synchronization and based on at least one prior wake-up operation, and to demodulate a paging channel signal employing at least one of a sector in a previous wake-up slot and a strongest sector observed via acquisition;
- and
- a processor that executes the instructions.
A communications apparatus, comprising:
- means for determining sleep mode operations in a device;
- means for triggering wake-up operations in the device;
- means for demodulating a communications channel for the device during sleep mode operations in the device prior to performing a chip level synchronization and based on at least one prior wake-up operation;
- and
- means for demodulating a paging channel signal employing at least one of a sector in a previous wake-up slot and a strongest sector observed via acquisition.
A non-transitory machine-readable medium having stored thereon machine-executable instructions for:
- executing sleep mode operations in a device;
- demodulating paging channel signals for the device during sleep mode operations in the device prior to synchronizing with one or more base stations and based on at least one prior wake-up operation, wherein demodulating the paging channel signals employs at least one of a sector in a previous wake-up slot and a strongest sector observed via acquisition.
A processor that executes the following instructions:
- executing sleep mode operations in a device;
- performing wake-up operations with one or more base stations in view of the sleep mode operations in the device;
- demodulating a paging channel for the device during sleep mode operations in the device prior to synchronizing with the one or more base stations and based on at least one prior wake-up operation;
- and
- demodulating a paging channel signal employing at least one of a sector in a previous wake-up slot and a strongest sector observed via acquisition.
A communications apparatus, comprising:
- means for generating signals to execute sleep mode operations in a device;
- means for performing wake-up operations with the device in view of the sleep mode operations in the device;
- and
- means for demodulating a paging channel for the device during sleep mode operations in the device prior to chip synchronizations in the device and based on at least one prior wake-up operation, wherein the means for demodulating the paging channel employs at least one of a sector in a previous wake-up slot and a strongest sector observed via acquisition.
Dependencies are inferred from the claim text.