摘要:
A method is provided to allow a mobile station to communicate with two different cells during a handoff between the cells. During the handoff, the mobile station may controllably combine information received from both of the cells with which it is communicating.
摘要:
A method of wireless communication. The method includes the step of transmitting at least one sub-frame associated with a first frame using at least a first wireless resource, such as a channelization code, a channelization tone and/or an allocated power transmit level. The method also includes the step of transmitting at least one sub-frame associated with a second frame. The sub-frame associated with the second frame may use at least a second wireless resource if a non-acknowledgement message associated with the first frame is received. However, if an acknowledgement message associated with the first frame is received, the sub-frame associated with the second frame may use at least the first and second wireless resources. Both first and second frames, and the sub-frames associated thereto may be assigned to a single user to reduce potential delay in real-time wireless services, such as voice, video or wireless gaming, for example.
摘要:
A channel quality feedback method for wireless transmission is described in which the rate for reporting channel quality information from a mobile station to a base station is variable as a function of the presence or absence of a transmission from the base station to the mobile station. In particular, the feedback rate from the mobile station to the base station is increased when the mobile station detects a transmission from the base station. As such, the feedback rate is slower when there is no data transmission for the mobile station and faster when the mobile station is receiving data.
摘要:
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.
摘要:
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.
摘要:
A method of the communication includes communicating at least one physical layer frame. The physical layer frame is formed by dynamically varying an aggregate packet size in response to a condition of a channel used for communicating voice and/or data. Here, the step of dynamically varying aggregate packet size may involve modifying a number of content frames to form the physical layer frame. The physical layer frame may correspond with a payload having at least two content frames and at least one IP header. Each content frame may include a voice frame and/or a data frame.
摘要:
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.
摘要:
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.
摘要:
A method that employs aspects of CDMA and OFDM modulation for controlling transmissions between a mobile station and a base station is provided. The method comprises forming a frame having a plurality of slots therein and then using CDMA modulation in a first portion of the plurality of slots, and using OFDM modulation in a second portion of the plurality of slots.
摘要:
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.