Motorola Corporation

Google Inc.

Motorola Mobility LLC

Nokia Solutions and Networks Oy

Nokia Siemens Networks Oy

Ajoy Kumar Singh

John McFarland Harris

Michael Mao Wang

Tyler A Brown

Timothy J Wilson

Rajeev Agrawal

Kadathur S Natarajan

Jay P Jayapalan

Ajaykumar R Idnani

Robert Davis Battin

Yogesh Bhatt

Mary Mak Valdivia

Xiangyang Chen

Mukesh Bhatla

Karthikeyan Arumugam

Muddasani S Reddy

Yogesh B Bhatt

A method and system for communicating header compression layer control messages. Header compression control messages are generated by a header compression layer () and are sent through at least one link layer data packet by a link transport communications protocol layer () to a remote receiver (). The link transport communications protocol layer () monitors receipt of link layer data packet acknowledgements that are received from the link transport communications protocol layer () of the remote receiver () for the at least one link layer data packet. The link transport communications protocol layer () determines successful transmission of the header compression control message and provides, to the header compression layer (), an indication of successful header compression control message transmission.

Link layer assisted robust header compression context update management

A communication device minimizes an opportunity for a queue stall during a communication session employing a reliable transport protocol by setting a current mode of operation for a Radio Link Protocol (RLP) and, based on a quality of an air interface, switching to an RLP mode of operation different from the current mode during the communication session.

Method and apparatus for dynamically changing modes of a reliable transport protocol

A method includes sending a request to a user indicating options to modify a quality of experience for one or more application flows between a radio network and a mobile node used by the user. The request indicates the user should select one of the following: declining an option to upgrade an existing service to a new service able to support the one or more application flows with a higher quality of experience than supported by the existing service; or accepting an option to upgrade the existing service to the new service. In response to receiving an indication the user selected the option to upgrade the existing service, performing one or more actions to upgrade the existing service to the new service. The option to upgrade the existing service can include an option of receiving advertisements for the new service or paying extra for the new service.

Application performance improvements in radio networks

Application performance improvement in radio networks

A method and system for communicating header compression layer control messages. Header compression control messages are generated by a header compression layer and are sent through at least one link layer data packet by a link transport communications protocol layer to a remote receiver. The link transport communications protocol layer monitors receipt of link layer data packet acknowledgements that are received from the link transport communications protocol layer of the remote receiver for the at least one link layer data packet. The link transport communications protocol layer determines successful transmission of the header compression control message and provides, to the header compression layer, an indication of successful header compression control message transmission.

A method () and apparatus () provide channel estimation with extended bandwidth filters. Antenna () receives a signal such as a pilot signal and detects a bandwidth associated with the pilot signal in a detector (). One of a plurality of filters (, and) including extended bandwidth filters () and a default filter () can be selected by a selector (). If the detector detects activity associated with a wider bandwidth, the filter associated with the wider bandwidth is selected over the presently selected filter. If no activity is detected, the default filter is selected.

Channel estimator with extended channel bandwidth

Various embodiments are described to address the need for an apparatus and method that improves link layer handoff by addressing the packet-loss problem existing today. An intermediate buffer management layer (IBML) () is introduced below layerof an OSI-based communications interface. The IBML buffers copies of OSI layerpackets being transmitted via lower layers () of the interface and manages the buffer contents using indications the IBML receives from one or more of the lower layers. When the IBML receives an indication that a link layer hard handoff is proceeding, the IBML transfers the presently buffered packets to a corresponding IBML () in the target communications interface. This sub-layerbuffer transfer enables the target communications interface to reduce packet-loss associated with the hard handoff.

Method and apparatus for improved link layer handoff

A home agent () and a foreign agent () in a wireless communication system () establish () a special communications channel () between themselves, the special communications channel dedicated to messages addressed to multiple mobile nodes. The home agent then detects () whether a message received by the home agent is addressed to multiple mobile nodes. When the message is addressed to multiple mobile nodes, the home agent sends () the message to the foreign agent through the special communications channel.

Method and system for handling messages addressed to multiple mobile nodes

An apparatus and method for performing Mobile/IP handoff between different access technologies. Associated with each access technology are two thresholds, a Low Water Mark and a High Water Mark. The method uses these water marks to its access technology selection in a particular environment. Using the method, a mobile noderemains on its preferred network when the signal strength on the preferred network (interface) is above the low water mark. When the signal strength on the preferred network drops below the high water mark, the method calculates the low water mark for the network. When the signal strength on the preferred network drops below the low water mark (LWM), the method initiates handoff to the next available network that meets certain conditions. The method initiates handoff back to the preferred network when the signal strength measurement on the preferred network is again above the high water mark.

Apparatus and method for mobile/IP handoff between a plurality of access technologies

A method of performing a modified RLP that reduces the transmission delay in a communications system by detecting frame erasures when they occur. The modified RLP method requests retransmission of erased frames based on pattern violations instead of sequence number violations. The method is preconditioned to expect a particular repeating pattern of frame delivery. For a system running a VSELP vocoder, the method in a receiving device expects to receive full rate or data (F) and DTX (D) frames in a repeating pattern FFDFFDFFD. For a system running an AMBE vocoder, the method in a receiving device expects to receive frames in a repeating pattern DFDFDFDD. The method detects when the pattern is violated and in desired instances immediately requests retransmission of the expected frame.

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Round Lake, IL, United States of America

Ajoy Kumar Singh