US Patent No. 10,172,182

EFFICIENT OPERATION OF USER EQUIPMENT IN A WIRELESS COMMUNICATION NETWORK


Patent No. 10,172,182
Issue Date January 01, 2019
Title Efficient Operation Of User Equipment In A Wireless Communication Network
Inventorship Vincent Huang, Sollentuna (SE)
Mona Matti, Nacka (SE)
Ying Sun, Sundbyberg (SE)
Assignee Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)

Claim of US Patent No. 10,172,182

1. A method of operating a User Equipment, UE, in a wireless communication network, the UE being configured for Discontinuous Reception, DRX, operation with a DRX cycle having a DRX ON period in which the UE is in a DRX awake state and ready for reception and a DRX OFF period in which the UE is in a DRX sleep state, the method comprising:the UE determining whether an uplink packet to be transmitted is delay tolerant, where determining whether an uplink packet to be transmitted is delay tolerant is performed on a packet-by-packet basis by inspecting the packet below an Internet Protocol (IP) layer; and
in response to determining the uplink packet is delay tolerant, the UE delaying a request for an uplink transmission grant for the uplink packet until a DRX ON period of the UE, wherein delaying, when the uplink packet is regarded as delay tolerant, the request for the uplink transmission grant until the DRX ON period of the UE comprises directly controlling a timing of the transmission of the request for an uplink transmission grant to the DRX ON period;
wherein the UE has a primary packet buffer configured to store the uplink packet, and wherein delaying, when the uplink packet is regarded as delay tolerant, a request for an uplink transmission grant until a DRX ON period of the UE comprises:
temporarily storing the uplink packet in a packet pre-buffer; and
transferring the uplink packet from the packet pre-buffer into the primary packet buffer when the UE is in the DRX ON period, wherein a presence of an uplink packet in the primary packet buffer triggers transmission of the request for an uplink transmission grant.