摘要:
A frame structure for a relay station operating in an OFDMA network includes a downlink sub-frame having a first allocated time zone dedicated for transmission between a base station in the network and the relay station, a second allocated time zone dedicated for transmission between the base station and a mobile station in the network, and a third allocated time zone dedicated for transmission between the relay station and the mobile station; and an uplink sub-frame having a first allocated time zone dedicated for transmission between the mobile station and the relay station, a second allocated time zone dedicated for transmission between the mobile station and the base station, and a third allocated time zone dedicated for transmission between the relay station and the base station.
摘要:
In an example embodiment, a system may include a mobile terminal. The mobile terminal may be configured to receive a first signal including a first time advance value. The first signal may be transmitted by a first base station. The mobile terminal may be further configured to receive a second signal. The second signal may be transmitted by a second base station. The mobile base station may be further configured to determine a difference in propagation delay between the first and second signals. The mobile terminal may be further configured to determine a second time advance value by correlating the first time advance value with the difference in propagation delay.
摘要:
A method of mapping transmission stations in a wireless network by grouping the transmission stations such that each transmission station in the same group transmits a sounding signal in the same time symbol. A method of grouping transmission stations in a wireless network includes sorting the transmission stations in descending order according to a number of transmission links of each transmission station that are unmapped, evaluating each transmission station based on how many unmapped transmission links can be mapped if the evaluated transmission station is made to transmit a sounding signal, placing each transmission station into a group, based on the evaluation, until all of the transmission links are mapped or until the maximum number of sounding bands are used, and, if all of the transmission links are not mapped, repeating the sorting, evaluating, and placing for each time symbol until all of the transmission links are mapped.
摘要:
A transceiver which includes amplifier operating as a power amplifier when amplifying a signal to be transmitted by the transceiver and as a low-noise amplifier when amplifying a signal received by the transceiver, and switching circuitry switchable to a first configuration in which the amplifier operates as a power amplifier, and to a second configuration in which the amplifier operates as a low-noise amplifier. The transceiver can be used in a relay station, or other station, operating in an Orthogonal Frequency Division Multiple Access (OFDMA) network. A method includes determining whether a station operating in an OFDMA network is to transmit a signal or receive a signal and providing the signal to an amplifier in the station so that the amplifier operates as a power amplifier or a low-noise amplifier based on the determination.