Patent ID: 8005116
Filing Date: 2011-08-23
Classification: H04L,H04W

Abstract:
1. A method comprising: receiving a presence mask comprising a plurality of presence bits, each presence bit having a value indicating whether a data sample is included in a packet, a first value indicating that a data sample is included in the packet, a second value indicating that a data sample is not included in the packet; reducing a number of bits that would have been added by zero bit insertion, the zero bit insertion adding a bit after a predetermined number of consecutive first values, the number of bits reduced by inverting meaning of a subset of the presence bits of the presence mask such that, for a first sample, the first value still indicates that a data sample is included in the packet and the second value still indicates that a data sample is not included in the packet but, for a second sample, the first value indicates that a data sample is not included in the packet and the second value indicates that a data sample is included in the packet; and encapsulating the packet comprising the presence mask with the presence bits having inverted meaning.