Patents by Inventor Mirko Schacht

Mirko Schacht has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20070076641
    Abstract: In a UMTS wireless communication system a UE autonomously determines that it is going to transit from an active traffic mode into an idle traffic mode and informs the NodeBs in its active set that it is doing so. It does so either by using Layer 1 signaling, using the uplink DPCCH to send a message to the NodeBs indicating the transition, or by using Layer 2 signaling by via MAC PDUs that contain the message, which are delivered on the uplink E-DPDCH to the NodeBs.
    Type: Application
    Filed: September 30, 2005
    Publication date: April 5, 2007
    Inventors: Rainer Bachl, Anil Rao, Mirko Schacht
  • Publication number: 20070076707
    Abstract: The present invention provides a method of wireless communication. The method includes determining whether a packet includes a voice payload or control information based on at least one property of the packet.
    Type: Application
    Filed: September 30, 2005
    Publication date: April 5, 2007
    Inventors: Michael Link, Mirko Schacht, Sudeep Palat, Said Tatesh
  • Publication number: 20070070926
    Abstract: In a UMTS wireless communication system, the enhanced dedicated physical control channel (E-DPCCH) that is usually always transmitted together with the enhanced dedicated physical data channel (E-DPDCH) on the uplink from a UE to a NodeB is instead only transmitted when a predetermined “start criterion” is met and is turned off when a predetermined “stop criterion” is met until a “start criterion” is later met again. The UE starts transmitting E-DPCCH whenever the corresponding E-DPDCH transport format combination is different from the previous one in the same HARQ process or some other “start criterion” is met. Multiple mechanisms can be used to decide when the UE should switch off E-DPCCH transmission after the transport format combination of E-DPDCH has changed.
    Type: Application
    Filed: September 29, 2005
    Publication date: March 29, 2007
    Inventors: Rainer Bachl, Anil Rao, Mirko Schacht, Henry Ye
  • Publication number: 20070049307
    Abstract: Disclosed is a method and system thereof for transmitting a Voice over Internet Protocol (VoIP) packet over a primary channel and a supplemental channel belonging to a shared pool of supplemental channels in a wireless communications network such that Orthogonal Variable Spreading Factor (OVSF) codes associated with higher spreading factors (SF) may be used, thereby minimizing the adverse effects on system resources associated with implementing VoIP over downlink Dedicated CHannels (DCH). In the method and system, if an entire VoIP packet cannot be transmitted over a single transmission time interval on a primary channel, a specific supplemental channel (or code associated therewith) is assigned to a User Equipment (UE) to which the VoIP packet is intended. A portion of the VoIP packet is transmitted to the UE over a Dedicated Physical Data CHannel (DPDCH) on the primary channel, and another portion of the VoIP packet is transmitted to the UE over a DPDCH on the supplemental channel.
    Type: Application
    Filed: August 26, 2005
    Publication date: March 1, 2007
    Inventors: Jens Mueckenheim, Anil Rao, Mirko Schacht
  • Publication number: 20070047489
    Abstract: Disclosed is a method and system for performing handoffs in a wireless communications network which incorporates Voice over Internet Protocol (VoIP) using shared supplemental spreading codes. In this method and system, a mobile station is assigned a first and second primary code and a first and second set of supplemental codes. The first primary and set of supplemental codes are associated with a first base station. The second primary and set of supplemental codes are associated with a second base station and assigned to the mobile station when the mobile station is entering into a handoff state. The first and second set of supplemental codes belong to a pool of shared supplemental codes associated with the first and second base stations, respectively. A specific supplemental code is assigned from each of the first and second sets of supplemental codes when a complete packet cannot be transmitted over a single transmission time interval on the first and second primary channels.
    Type: Application
    Filed: August 26, 2005
    Publication date: March 1, 2007
    Inventors: Rainer Bachl, Jens Mueckenheim, Anil Rao, Mirko Schacht
  • Publication number: 20070025345
    Abstract: In a UMTS wireless communication system, when the packet size on the enhanced dedicated physical data channel (E-DPDCH) on the uplink from a UE to a NodeB reaches a converged default packet size, the corresponding dedicated physical control channel (E-DPCCH) is turned off. The NodeB uses the default packet size to decode the frame received on the E-DPDCH using each possible redundancy version. Alternatively, the E-DPCCH is turned off and a new transmission flag is transmitted by the UE only when a new frame is transmitted by the UE. NodeB then uses the presence or absence of that flag in conjunction with the absence of E-DPCCH to determine which redundancy version is to be assumed in decoding the frame received on E-DPDCH.
    Type: Application
    Filed: July 27, 2005
    Publication date: February 1, 2007
    Inventors: Rainer Bachl, Anil Rao, Mirko Schacht, Henry Ye
  • Publication number: 20060215604
    Abstract: A method for scheduling uplink data transmission by user equipment (UE) in a wireless communication network is provided. The method may comprise scheduling data transmission by the user equipment in response to physical layer signaling received from the user equipment.
    Type: Application
    Filed: March 24, 2005
    Publication date: September 28, 2006
    Inventors: Jens Mueckenheim, Mirko Schacht
  • Publication number: 20060215625
    Abstract: The present invention provides a method and an apparatus for managing relocation of one or more scrambling codes in a spread spectrum wireless communications system. The method comprises detecting an indication for a serving radio network subsystem relocation that causes a user equipment to leave a first radio network controller and selectively transiting, through an intermediate transition, at least one scrambling code of the one or more scrambling codes associated with an uplink from the first radio network controller to a second radio network controller for the user equipment in response to the indication. The first radio network controller may maintain three pools of scrambling codes, namely, a first pool of one or more relocated scrambling codes (SCs), a second pool of one or more free scrambling codes and a third pool for each of one or more used scrambling codes. By avoiding an early reuse, an uplink scrambling code may be assigned to a particular UE because a target radio network controller, i.e.
    Type: Application
    Filed: March 23, 2005
    Publication date: September 28, 2006
    Inventors: Thomas Hempel, Mirko Schacht, Sudeep Palat
  • Publication number: 20060142032
    Abstract: The present invention provides a method and an apparatus for controlling a communications system that includes a mobile wireless device, a first and a second base station and a radio network controller. The communications system may allocate frequency bands to users on a multiplicity of channels associated with a multi-layer access network across at least two cells communicatively coupled to a first and a second base station, respectively. The method comprises monitoring a radio emission parameter associated with the first and second base stations that communicate with the mobile wireless device. A radio emission parameter associated with the first and second base stations, such as signal strength or quality, is monitored, to select a target cell among a set of candidate cells for the mobile wireless device and to transfer the mobile wireless device from a first frequency band to a second frequency band.
    Type: Application
    Filed: December 23, 2004
    Publication date: June 29, 2006
    Inventors: Fariborz Derakhshan, Enrico Jugl, Mirko Schacht
  • Publication number: 20060067269
    Abstract: In a method of scheduling, one or more additional users of a group may be selected, to be simultaneously scheduled with a first user of the group that has already been scheduled. The selection of the one or more users may be made based on spatial information of the users in the group.
    Type: Application
    Filed: September 27, 2004
    Publication date: March 30, 2006
    Inventors: Enrico Jugl, Jens Mueckenheim, Mirko Schacht
  • Publication number: 20060056404
    Abstract: The present invention provides a method of wireless telecommunication is provided. The method includes accessing a plurality of first data packets having a first size, accessing at least one second data packet having a second size, the second size being larger than the first size, forming a plurality of third data packets comprising portions of the at least one second data packet based upon the first and second sizes, and selecting at least one of the plurality of first data packets based upon the plurality of third data packets.
    Type: Application
    Filed: September 14, 2004
    Publication date: March 16, 2006
    Inventors: Jens Mueckenheim, Mirko Schacht, Said Tatesh
  • Publication number: 20060009244
    Abstract: In the method of scheduling, an order in which mobile stations are scheduled is changed based on at least one transmit beam criteria.
    Type: Application
    Filed: July 9, 2004
    Publication date: January 12, 2006
    Inventors: Mirko Schacht, Peter Jung
  • Publication number: 20050250527
    Abstract: A method is provided for controlling pilot power in a communications system. The method comprises determining a load associated with a cell in the communications system, and setting pilot power at a level associated with the determined load. In one exemplary embodiment, pilot power is set at a first low level in response to the determined load being less than a preselected setpoint and at a second, higher level in response to the determined load being greater than the preselected setpoint.
    Type: Application
    Filed: May 10, 2004
    Publication date: November 10, 2005
    Inventors: Enrico Jugl, Mirko Schacht, Fariborz Derakhshan