Patents Examined by Anthony Ton
  • Patent number: 6201811
    Abstract: In a wireless telecommunications network, transporting identification information, such as access point identifier (AP ID) and wireless terminal identifier (WT ID) information, in each uplink and each downlink protocol data unit (PDU) being transmitted between a sender and a receiver, without increasing bandwidth requirements. This is accomplished by modifying each PDU as a function of a first identification vector, prior to transmission, wherein the first identification vector reflects, for example, the AP ID and the corresponding WT ID. At the receiver, the PDU is re-modified as a function of a second identification vector, wherein the second identification vector reflects an expected AP ID and WT ID. If the receiver is the intended recipient of the PDU, the first and second identification vectors will be the same, and the process of re-modifying the PDU merely serves to restore the original value of the PDU.
    Type: Grant
    Filed: March 24, 1998
    Date of Patent: March 13, 2001
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Mikael Larsson, Peter Larsson
  • Patent number: 6198732
    Abstract: Interleaving of forward-link paging or traffic channels is performed by implementing closed-form expressions that are equivalent to the table-based processing specified in the cdmaOne telecommunication specification. The implementation can be in either hardware or software or a combination of both. For each cdmaOne forward-link paging or traffic channel, the closed-form expression relates each un-interleaved symbol position to a corresponding interleaved symbol position, which is used to generate an interleaved symbol stream from the un-interleaved symbol stream. In one hardware implementation, the forward-link interleaver of the present invention has an address generation unit made from a modulo counter, a multiplier, and an adder.
    Type: Grant
    Filed: March 13, 1998
    Date of Patent: March 6, 2001
    Assignee: Lucent Technologies Inc.
    Inventor: Mohit K. Prasad
  • Patent number: 6195344
    Abstract: De-interleaving of forward-link paging or traffic channels is performed by implementing closed-form expressions that are equivalent to the table-based processing specified in the cdmaOne telecommunication specification. The implementation can be in either hardware or software or a combination of both. For each cdmaOne forward-link paging or traffic channel, the closed-form expression relates each interleaved symbol position to a corresponding de-interleaved symbol position, which is used to generate a de-interleaved symbol stream from the interleaved symbol stream. In one hardware implementation, the forward-link de-interleaver of the present invention has an address generation unit made from two modulo counters.
    Type: Grant
    Filed: March 13, 1998
    Date of Patent: February 27, 2001
    Assignee: Lucent Technologies Inc.
    Inventor: Mohit K. Prasad
  • Patent number: 6169731
    Abstract: A call setup process (200) has a fast and robust preamble signal acquisition and acknowledgement procedure (400). The procedure (400) is a multistage search technique for first identifying with high probability the preamble signal and for verifying signal acquisition. The procedure (400) further includes power control (408/426/428) and rate determination (430) capability for enhanced call setup processing.
    Type: Grant
    Filed: March 10, 1998
    Date of Patent: January 2, 2001
    Assignee: Motorola, Inc.
    Inventors: Kenneth A. Stewart, Sanjeev Garg