摘要:
An apparatus comprising a connection manager in a user equipment (UE) configured to communicate with a cellular network via a cellular interface and with a short range wireless access network via a short range wireless access interface, wherein the connection manager is configured to enable the short range wireless access interface when a data connection request is detected and disable the short range wireless access interface when no more data connection requests are detected after expiration of a pre-determined time, and wherein the data connection request is at least partially delivered via the cellular interface while the short range wireless access interface is being set up and data connection is switched to the short range wireless access interface after completing short range wireless access interface setup.
摘要:
An apparatus comprising a connection manager in a user equipment (UE) configured to communicate with a cellular network via a cellular interface and with a short range wireless access network via a short range wireless access interface, wherein the connection manager is configured to enable the short range wireless access interface when a data connection request is detected and disable the short range wireless access interface when no more data connection requests are detected after expiration of a pre-determined time, and wherein the data connection request is at least partially delivered via the cellular interface while the short range wireless access interface is being set up and data connection is switched to the short range wireless access interface after completing short range wireless access interface setup.
摘要:
A method for transmitting to a direct mobile communications (DMC) device by a user equipment operating in both a cellular mode and a DMC mode includes estimating a first pathloss of a first channel from the user equipment to a base station according to a difference between a known base station transmit power level and a received base station power level, and estimating a second pathloss of a second channel from the user equipment to the DMC device according to a difference between a known DMC device transmit power level and a received DMC device power level. The method also includes setting a transmit power level for transmission to the DMC device according to the first pathloss and the second pathloss, and transmitting a signal to the DMC device at the transmit power level.
摘要:
A system and method for employing six-bit rank 1 and 2 codebooks for four transmit antennas is provided. A method for communications device operation includes estimating a communications channel between the communications device and a controller serving the communications device, thereby producing a channel estimate, quantizing the channel estimate using a codebook, thereby producing a selected codeword, and transmitting an index corresponding to the selected codeword from the codebook to the controller. The codebook includes a plurality of first level codewords, with each first level codeword having a plurality of subsidiary codewords. The quantizing is a search of only the first level codewords followed by a search of a subset of the plurality of subsidiary codewords, and the codebook is based on a rank of communications between the communications device and the controller.
摘要:
A system and method is provided for employing six-bit rank 1 and 2 codebooks for multiple transmit antennas. A channel estimate is generated for a communications channel that can be established between a communications device and a controller serving the communications device. The channel estimate can be quantized using a codebook to produce a selected codeword. An index corresponding to the selected codeword can be transmitted to the controller. The codebook can include a plurality of first level codewords, with each first level codeword having a plurality of subsidiary codewords. The quantizing can be in the form of a search of the first level codewords followed by a search of a subset of a plurality of subsidiary codewords, and the codebook can be derived at least in part from a rank of communications between the communications device and the controller.
摘要:
A system and method is provided for employing six-bit rank 1 and 2 codebooks for multiple transmit antennas. A channel estimate is generated for a communications channel that can be established between a communications device and a controller serving the communications device. The channel estimate can be quantized using a codebook to produce a selected codeword. An index corresponding to the selected codeword can be transmitted to the controller. The codebook can include a plurality of first level codewords, with each first level codeword having a plurality of subsidiary codewords. The quantizing can be in the form of a search of the first level codewords followed by a search of a subset of a plurality of subsidiary codewords, and the codebook can be derived at least in part from a rank of communications between the communications device and the controller.
摘要:
A method for transmitting to a direct mobile communications (DMC) device by a user equipment operating in both a cellular mode and a DMC mode includes estimating a first pathloss of a first channel from the user equipment to a base station according to a difference between a known base station transmit power level and a received base station power level, and estimating a second pathloss of a second channel from the user equipment to the DMC device according to a difference between a known DMC device transmit power level and a received DMC device power level. The method also includes setting a transmit power level for transmission to the DMC device according to the first pathloss and the second pathloss, and transmitting a signal to the DMC device at the transmit power level.
摘要:
A system and method for employing six-bit rank 1 and 2 codebooks for four transmit antennas is provided. A method for communications device operation includes estimating a communications channel between the communications device and a controller serving the communications device, thereby producing a channel estimate, quantizing the channel estimate using a codebook, thereby producing a selected codeword, and transmitting an index corresponding to the selected codeword from the codebook to the controller. The codebook includes a plurality of first level codewords, with each first level codeword having a plurality of subsidiary codewords. The quantizing is a search of only the first level codewords followed by a search of a subset of the plurality of subsidiary codewords, and the codebook is based on a rank of communications between the communications device and the controller.
摘要:
A system and method for transmitting and error handling control feedback information is provided. A method for error handling in a transmission of control feedback information over a communications link by a first station includes determining a first feedback information at the first station, transmitting the first feedback information at a first instance to a second station, and receiving a scheduling message from the second station. The scheduling message includes a second feedback information, and the second feedback information is based on the first feedback information. The method also includes determining if the first feedback information at the first instance was received correctly by the second station based on the scheduling message, and in response to determining that the first feedback information at the first instance was not received correctly by the second station, transmitting the first feedback information at a second instance to the second station.
摘要:
Embodiments of the present invention are systems and methods for wireless communication. According to one embodiment, a system for wireless communication comprises a first relay station, second relay station, and a base station. The first relay station and the second relay station are operable to receive and transmit wireless signals. The base station is operable to transmit the wireless signals to the first relay station and the second relay station in an interchanging pattern during successive time frames so that the first relay station and the second relay station forward the wireless signals to a mobile station.