Reducing power consumption in voice over long term evolution terminals using semi persistent scheduling in connected discontinuous reception mode

US9635616B2 · kind B2 · utility

Assignee

• Apple Inc. · US

Inventors

• Shivesh Makharia · Santa Clara, US
• Sree Ram Kodali · Sunnyvale, US
• Navid Damji · Cupertino, US
• Thanigaivelu Elangovan · Cupertino, US
• Luciano M. Verger · San Jose, US
• Madhusudan Chaudhary · Campbell, US
• Johnson O. Sebeni · Fremont, US
• Srinivasan Vasudevan · Sunnyvale, US
• Samy Khay-Ibbat · San Francisco, US
• Longda Xing · San Jose, US
• Jianxiong Shi · Dublin, US

Key dates

• Filing date: Aug 25, 2016
• Grant date: Apr 25, 2017
• Expiry date: Aug 25, 2036

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02D30/70
• WIPO field: Digital communication
• WIPO sector: Electrical engineering

Abstract

A connection with a network that includes a base station (BS) may be established by a user device (UE) via a wireless connection, for conducting communications using semi persistent scheduling (SPS) in a connected discontinuous reception (C-DRX) mode. The SPS transmit periodicity may be adjusted with respect to the SPS activation command and the SPS interval UL (for uplink). Data may then be transmitted during the C-DRX On-Duration periods according to the determined SPS transmit periodicity. In some embodiments, the SPS transmit periodicity is adjusted such that following a first C-DRX On-Duration period when an SPS activation command is received, SPS data transmission occurs a specified number of subframes earlier during each subsequent C-DRX On-Duration period than in the first C-DRX On-Duration period. The SPS data transmission in each subsequent C-DRX On-Duration period may take place as soon as the UE device wakes up during the On-Duration period.