摘要:
A method is provided for communication in a wireless telecommunications network. The method comprises transmitting an extended physical downlink control channel to a user equipment using transmit diversity from at least one demodulation reference signal port.
摘要:
A method for user equipment operation in a wireless communication system, the wireless communication system having an base station, the method comprising measuring a channel between the UE and the base station, determining a quantized estimate using a codebook to approximate the measured channel, computing an error measure for the quantized estimate and transmitting the error measure and the quantized estimate to the base station for use by the base station in reconstructing an actual channel vector.
摘要:
A method is provided for operating a UE in a wireless communication network. The method comprises sending, by the UE, an ACK/NACK message after receiving data on a PDSCH scheduled by an E-PDCCH, wherein the sending is from at least one antenna port and uses at least one physical resource, and wherein the at least one physical resource is determined based at least partially on a resource over which the E-PDCCH is received, and wherein the resource over which the E-PDCCH is received consists of at least one eCCE.
摘要:
A method is provided for communication in a cell in a wireless telecommunication system. The method comprises, in a region that would otherwise carry a PDSCH, the region being defined by a number of resource blocks and a number of OFDM symbols, instead transmitting at least one of an uplink grant and a downlink assignment in a plurality of OFDM symbols within a first slot, a second slot, or both slots of the region, wherein the region can use either localized or distributed resources, and wherein the region contains one of: a transmission point-specific reference signal; a UE-specific reference signal; and a cell-specific reference signal.
摘要:
A method is provided for providing reference signal information in a cell including a plurality of transmission points in a wireless telecommunication system. The method comprises transmitting, by one of a subset of transmission points in the cell, at least one reference signal for demodulating a PDCCH, wherein transmitting the at least one reference signal comprises transmitting the at least one reference signal in at least one CCE reserved in a PDCCH region for transmission of the at least one reference signal.
摘要:
A method, system and computer-usable medium for configuring UE-specific A-SRS subframes. More specifically, UE-specific Aperiodic Sounding Reference Signal (A-SRS) subframes are defined only within a radio subframe.
摘要:
The invention provides a frequency control method and apparatus for efficiently controlling in a wireless system the carrier frequency of a received signal transmitted over a radio link to counteract carrier frequency drifts in the received signal and hence maintain link connectivity. In a preferred embodiment, the invention provides upstream and downstream carrier frequency control in a broadband wireless access (BWA) time division multiplex access (TDMA) system formed of a base transceiver station (BTS) and multiple customer premises equipment (CPE) units. At each of the CPE units, the CPE upstream carrier frequency is preemptively adjusted based on downstream carrier frequency measurements to counteract carrier frequency variations in the upstream carrier frequency. For downstream communications, the BTS periodically polls all active CPE units to obtain downstream frequency offset estimates, calculate a frequency correction offset and adjust the downstream carrier frequency accordingly.
摘要:
A method is provided for communication in a wireless telecommunication system. The method comprises transmitting, by a first access node, an indicator to a second access node over an interface between the first access node and the second access node, wherein the indicator provides information on a transmission of a control channel by the first access node.
摘要:
A method is provided for communication in a wireless telecommunication system. The method comprises designating, by a network element, a first set of time-frequency resources for transmitting a first set of downlink control channels for a plurality of UEs, wherein the first set of time-frequency resources is known to the plurality of UEs, and wherein the first set of time-frequency resources varies from a first time interval to a second time interval. The method further comprises mapping, by the network element, a first downlink control channel to the first set of time-frequency resources. The method further comprises transmitting, by the network element, the first downlink control channel together with a downlink data channel in a frequency-division multiplexing manner.
摘要:
A method and system for access and uplink power control for a wireless system having multiple transmit points. In one aspect, a method at a user equipment operating in a wireless network having a plurality of transmission points including a macro evolved Node B (‘eNB’) and at least one low power node (‘LPN’) having transmit power lower than that of the macro eNB, the method finding, at the user equipment, at least one reference transmission point, the finding utilizing at least one of a calculation at the user equipment and a message from a network element; and performing, by the user equipment, uplink power control based on the at least one reference transmission.