Abstract: Disclosed is a method of data rate adaptation based on channel conditions. Data is initially transmitted at a first data rate based on a measured first channel condition and subsequently re-transmitted at a second data rate based on a measured second channel condition, wherein the first channel condition is measured prior in time to the second channel condition.

Abstract: An ARQ method using Incremental Redundancy that can be used in either synchronous or asynchronous communication systems. Information received by receiving equipment contains a one-bit NEW/CONTINUE flag indicating whether the received information is the beginning of new information or the continuation (or retransmission) of previously transmitted information. An ACK message is transmitted by the receiving equipment when such equipment receives information containing a NEW flag and successfully decodes such information. The receiving equipment also transmits an ACK message when it receives information containing a CONTINUE flag while it was waiting for NEW information. Thus, the method of the present invention allows for relatively quick recovery from misinterpretations of ACK/NACK messages and accommodates subscribers having different transmission requirements.

Abstract: In the method, a receiver receives an indication of if the maximum number of sub-packet transmissions for conveying a data packet from a transmitter to the receiver has taken place. If the receiver has not properly received the data packet over a channel when this indication is received, then the receiver sends a non-acknowledgement response that causes the transmitter to re-schedule and re-send the data packet.

Abstract: Disclosed is a method and apparatus of data transmission having increased reliability in control information transmission without increased overhead and frame transmission delays. This method and apparatus of data transmission involves transmitting a data packet over a plurality of time slots of a data channel and associated control information over a plurality of time slots of a parallel control channel, wherein the control information in each time slot indicates to a receiver a manner of decoding the data packet or a portion of the data packet which was transmitted in a corresponding time slot of the data channel.

Abstract: The error detection method includes decoding a portion of each control channel that is simultaneously received by a user equipment (UE) in a wireless communication system. The UE is provided with techniques to determine if one or more of the control channels were successfully received during the decoding step. If more than one control channel was successfully received, the method selects only one of the successfully received control channels based on calculated path metric differences (PMD) that serve as a “tie-breaking” mechanism to select the correct control channel for a particular UE.

Abstract: A multiple mode data communication system and method provides the flexibility to schedule wireless unit transmissions and/or allow the wireless unit to transmit autonomously. In certain embodiments, the wireless units can transmit autonomously and/or use scheduling depending on the data rate, the length of the data packet or the type of data. For example, the wireless units can transmit autonomously at lower data rates and use scheduling at higher data rates. Thus, the multiple mode system enables wireless unit transmissions to be scheduled and/or be transmit autonomously, and wireless units can simultaneously operate in different scheduling and/or autonomous modes.

Abstract: A method of using a generated pilot signal inserted in a CQF slot of an uplink signaling channel to control the transmission power of data information independently of the transmission power of voice information regardless of whether the voice and data information are transmitted simultaneously.

Abstract: Errors in closed loop transmit diversity (CLTD) feedback signaling may be detected and/or corrected by a mobile station, according to aspects of the present invention, based on signals received from a base station. The mobile station is generally configured to compute antenna weights to be applied at the base station and feed back corresponding antenna control bits to the base station, as in conventional CLTD systems. However, rather than automatically process subsequent transmissions received from the base station as if the base station properly received the antenna control bits and applied the computed antenna weights, the mobile station attempts to determine the antenna weights actually applied at the base station, and uses these determined antenna weights for processing the subsequent transmissions. Accordingly, even if a feedback signaling error occurred, resulting in the base station using the wrong antenna weights, the mobile station may properly process the transmissions.

Abstract: A method of data flow control between a mobile and base station of a wireless communication system where the mobile is transferring wirelessly part or all of the data received from the base station to a local device in accordance with a standard such as Bluetooth or Wi-Fi. The rate at which the mobile is receiving data from the base station is typically much higher than the rate at which the mobile is transferring the data to the local device. The mobile sends a STOP data flow control command to the base station causing the base station to either stop transmitting data or transmit data at a lower data rate thus prevention mobile buffer overflow and loss of data from occurring. When conditions are favorable for reception of data, the mobile sends START data flow control commands to the base station allowing the base station to resume transmitting data at a higher data rate. The higher data rate may be equal to the original established data rate.

Abstract: A method that globally allocates resources of a communication system. A global fast scheduler receives global CQI information from UEs of a communication system. The global fast scheduler determines a resource allocation value and assigns a UE to any available cell site that is a member of the active set of the UE and which can service the UE in accordance with the determined resource allocation value.

Abstract: A base station switching system includes a wireless unit that waits before switching from a previous base station to a new base station after the wireless unit has indicated to the wireless communications system the identity of the new base station. Thus, the wireless unit continues to receive data from the previous base station, and the data forwarded to the previous base station will not be lost. For example, whenever a wireless unit decides to switch to a new base station, the wireless unit sends an indication to the wireless communications system of the identity of the selected base station. Before the wireless communications system can forward the data to the new base station, the wireless communications system continues to forward data to the previous base station. To avoid losing such data, the wireless unit continues receiving data from the previous base station.

Abstract: A method for reliably transmitting signaling information is provided. One type of signaling information is transmitted over a primary control channel. The signaling information that is to be transmitted over the primary control channel is defined as a set of particular information. Other signaling information are conveyed over a secondary control channel. Prior to transmission, the information to be conveyed over the secondary channel is scrambled in accordance with a particular scrambling procedure that indicates the information that is to be sent over the primary control channel. The scrambling is thus used to encode the information content of the primary control channel into the information of the secondary control channel thereby further protecting the integrity of the information being conveyed over both control channels.

Abstract: A rate feedback and adaptation scheme or system uses a rate of rate feedback asymmetrical with the rate of data rate adaptation. In particular, the rate adaptation system provides a rate of rate feedback slower than the rate of rate adaptation. Thus, by allowing the base station to change the data rate more frequently than the individual wireless units reports the rate information, the rate adaptation system can provide improved flexibility and more efficient use of wireless resources while reducing the processing and transmission overhead required to report the rate information. For example, every 3 slots, a wireless unit can calculate and report a rate for the wireless unit to use on a shared channel to send data. The base station receives the rates from the wireless units seeking to send data over the shared channel and selects a wireless unit to use the shared channel.

Abstract: An uplink and downlink channel structure supports a shared downlink data channel. The new structure accommodates advanced physical and Medium Access Control (MAC) layer techniques, such as incremental redundancy (IR), fast adaptation to channel conditions, and multiple input multiple output (MIMO) antenna configuration. The proposed changes are intended to lead to a downlink structure that achieves higher spectral efficiency for the packet oriented services over then shared downlink channel. Additionally, the new structure uses the base station transmit power information and of the channelization (OVSF) code space more efficiently.

Abstract: A method is provided for controlling transmissions between a base station and a mobile station in a wireless system using a plurality of subcarriers. A subcarrier allocation scheme is proposed where a total scheduling interval is divided into at least two sub-intervals. In a first interval, data transmission takes place using a large number of subcarriers. In a second interval, a smaller number of subcarriers are used for transmission. In a time-synchronized system, the first interval overlaps with the first interval in at least some neighboring cells and the second interval overlaps with the second interval in at least some neighboring cells.

Abstract: Data rate determination is provided in a system where the available power fraction and available Walsh codes in each active leg are dynamically changing over time. This method adapts the rate (modulation and coding) based on the combined resource (power & code space) levels seen at each cell. The method results in maximization of the rate supportable by each cell given their resource constrained situation while meeting the constraints of target packet or frame error rate and orthogonality. Furthermore, improved fast cell selection by the mobile results due to this approach that is based on knowledge of combined resource (power & code space) levels across the cells in the active set.

Abstract: A method of wireless communication. The method includes the step of transmitting at least a first sub-frame from a first voice frame. If the first sub-frame is received by the wireless unit, an acknowledgement message is transmitted, and the remaining sub-frames from that voice frame are not transmitted. If the first sub-frame is not received by the wireless unit, however, a non-acknowledgement message is transmitted. Here, the base station retransmits at least another sub-frame from the first voice frame.

Abstract: A method of adaptive Walsh code allocation in a wireless communication system. The method includes the step of each voice user transmitting quality condition signal, such as a pilot signal strength measurement to a corresponding base station. Upon receiving each quality condition signal, the method includes determining a spreading factor for each voice user in response to its quality condition signal. A Walsh code is thereafter allocated to each voice user in response to the determined corresponding spreading factor. Thus, for example, if the quality condition signal of a first voice user is relatively higher than the quality condition signal of a second voice user, the spreading factor allocated to the first voice user should be longer than the spreading factor of the second voice user.

Abstract: A method that globally allocates resources of a communication system. A global fast scheduler receives global CQI information from UEs of a communication system. The global fast scheduler determines a resource allocation value and assigns a UE to any available cell site that is a member of the active set of the UE and which can service the UE in accordance with the determined resource allocation value.

Abstract: A method of data flow control between a mobile and base station of a wireless communication system where the mobile is transferring wirelessly part or all of the data received from the base station to a local device in accordance with a standard such as Bluetooth or Wi-Fi. The rate at which the mobile is receiving data from the base station is typically much higher than the rate at which the mobile is transferring the data to the local device. The mobile sends a STOP data flow control command to the base station causing the base station to either stop transmitting data or transmit data at a lower data rate thus prevention mobile buffer overflow and loss of data from occurring. When conditions are favorable for reception of data, the mobile sends START data flow control commands to the base station allowing the base station to resume transmitting data at a higher data rate. The higher data rate may be equal to the original established data rate.