Patent ID: 8634376
Filing Date: 2014-01-21
Classification: H04J,H04L,H04W

Abstract:
1. A communication method for a mobile device in an orthogonal frequency division multiple access (OFDMA) wireless packet system including a plurality of base stations and mobile devices in a plurality of geographic cells, each mobile device having an identifier that is assigned by the system, the method comprising: receiving a signal over a time-frequency resource region contained in a plurality of frames, the signal carrying packets destined to a number of mobile devices with a plurality of modulation and coding schemes using an integer multiple of basic time-frequency resource units, wherein each frame is divided into a plurality of time slots, each time slot consists of a plurality of orthogonal frequency division multiplexing (OFDM) symbols, each OFDM symbol contains a plurality of frequency subcarriers, and the basic time-frequency resource unit contains a number of subcarriers in a number of OFDM symbols; and identifying from the signal a plurality of packets that are destined to the mobile device using a time index or a frequency index of the time-frequency resource region in conjunction with the identifier assigned to the mobile device.