Motorola Corporation

Motorola Mobility LLC

Motorola Solutions, Inc.

Northwestern University

Google Technology Holdings LLC

Vijay G Subramanian

John McFarland Harris

Rajeev Agrawal

Anand Bedekar

Stavros Tzavidas

Randall Berry

Fan Wang

Joseph Schumacher

Matt J Dillon

Jyoti Black

Jiawei Huang

Rajeev Agarwal

Richard J La

A method and apparatus for handing over a mobile station () from a serving base station () to a target base station () within a wireless communication system () is described. A session is established between the mobile station and the serving base station and it is determined that the mobile station is to be handed over from the serving base station to the target base station. The target base station notifies the serving base station of identifying data of the target base station and added to the identifying data is a message to be sent to mobile station regarding the handover of the mobile station. The serving base station sends the message including the identifying data to the mobile station and the mobile station is handed over from the serving base station to the target base station using the identifying data of the target base station.

Method and apparatus for decreasing latencies during handover

Various embodiments are described which may serve to improve spreading channel code selection in wireless technologies that employ two-stage ranging. For example, some of the embodiments enable a number of spreading codes to be reused at each network node (), potentially increasing the number of codes available to each remote unit and thereby reducing the collision rate. Rather than simply selecting a spreading channel code randomly, remote units (-), in some embodiments, select a spreading channel code based on one or more considerations such as pilot signal strength, remote unit location, a remote unit mobility level, and a priority class associated with the remote unit. Depending on the embodiment, network nodes can partition the spreading codes into groups and then assign link bandwidth to remote units based on the group associated with the code selected by that remote unit.

Method and apparatus for spreading channel code selection

A method and system for allocating a plurality of subcarriers to a plurality of subscriber devices in a wireless network. A set of characteristics is identified () for a transmission on each of the plurality of subcarriers. A dynamic weight is assigned () to at least one subscriber device of the plurality of subscriber devices at each decision instance of the transmission corresponding to the at least subscriber device. The assignment of the dynamic weight is based on at least one of a throughput, delay, packet-loss and queue length requirement of one or more flows of the subscriber device. Further, a set of optimum values is determined () for the set of characteristics based on the dynamic weights and channel feedback. The plurality of subcarriers are allocated () to the at least one subscriber device based on at least one optimum value of the set of optimum values.

Method and system for allocating subcarriers to subscriber devices

A method and apparatus for resource allocation and scheduling within a wireless communication system is provided herein. During resource allocation, a maximum total system transmit power (P), a maximum number of codes available (N), a maximum number of codes for each user in the system (N=(N, . . . , N)), a maximum SINR value (S=(S, . . . , S)) for each user in the system, and a SINR per watt of transmit power for each user in the system (e=(e, . . . , e)) is received by a scheduler. Scheduler then outputs an optimal number of codes per user (n) and power levels per user to (p).

Method and apparatus for resource allocation and scheduling

Methods for dividing resources of base stations among multiple mobile stations are provided. According to one embodiment of the invention, an overlapping group having a plurality of mobile stations that are overlapped between at least two cellular areas are generated () to provide a plurality of overlapping mobile stations, which are ranked () based, at least in part, on at least one threshold. A maximum number of the plurality of overlapping mobile stations having a highest ranking that can be assigned with reserved frequency and timing assignments are selected () to provide a plurality of selected overlapping mobile stations. These selected overlapping mobile stations are assigned () using the reserved frequency and timing assignments.

Methods for dividing base station resources

A mobile station () senses () at least one boundary of a wireless communication packet () which includes a plurality of frames. The mobile station () then determines () at least a first group () and a second group () of frames at least in part in relation to the sensed boundary. The first group () of frames is received () at a first target reliability, and the second group () of frames is received () at a second target reliability. Optionally, the frames are sent () or received at a variable reliability in relation to the frames' distances from one or more boundaries () of the packet ().

Variable reliability wireless communication transmission method and apparatus

Various embodiments are described to address the need for channel maintenance/channel quality signaling that can better utilize reverse link capacity and conserve battery life. Generally expressed, a remote unit () enters () a high-rate-channel-maintenance mode in which it transmits channel maintenance signaling. When a low-rate condition is met (), the remote unit enters () a low-rate-channel-maintenance mode in which it transmits channel maintenance signaling at either a lower rate or a lower transmit power than when in the high-rate-channel-maintenance mode. Then when a high-rate condition is met (), the remote unit reenters the high-rate-channel-maintenance mode.

Method and apparatus for improved channel maintenance signaling

A method and information processing system for wirelessly transmitting at least one of a downlink channel descriptor and an uplink channel descriptor for reception by at least one wireless device (). The method comprises selecting at least one transmission time for transmitting a pointer that indicates a transmission time for a DCD and/or a UCD. The pointer is transmitted at a time between a first transmission and a second transmission of the at least one of downlink channel descriptor and uplink channel descriptor. The transmission time is selected to reduce a time interval for the at least one wireless device () to search for the at least one of the DCD and UCD. Also, a message that includes DCD information and/or UCD information associated with at least one neighboring cell can also be chosen to transmit at specifically chosen times to the at least one wireless device ().

System and method for increased battery saving during idle mode in a wireless communication system

A process () to facilitate determination of a particular data rate to use when communicating data with respect to a mobile station comprises providing () historical information regarding past radio frequency channel conditions, data quantity information () as corresponds to a current data file to be transmitted, and assessing () historical data transmission as correspond to the mobile station. One then selects () a data rate as a function of such information. In a preferred embodiment, this comprises varying a time scaling factor as a function of relative data file size, which time scaling factor serves to influence the extent to which past history serves to otherwise influence the selection of a particular data rate.

Method to facilitate determination of a data rate

A method of performing packet level transmission scheduling in a communications systems including a plurality of cells, each cell including a base station and plurarity of mobile stations. The method performs scheduling while considering radio resource allocation at the wireless access node. In a schedule plan phase of the method, average power and average effective data rate are determined for all mobile stations in the system. In addition, the planned fractions of frames &#x3c1; that each mobile in the system will transmit is determined so that resources are allocated fairly. In the actual schedule phase of the method, current power and effective data rate values are compared to the average power values. This information along with the &#x3c1; values is used to determine the actual schedule of packet transmissions for all mobiles in a particular cell.

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Chicago, IL, United States of America

Vijay G Subramanian