摘要:
The present invention relates to method for communicating between a primary station and a secondary station comprising (a) at the secondary station, upon arrival of a data packet to be transmitted to the primary station, buffering said data packet in a buffer, and transmitting to the primary station a request for an uplink transmission resource if a request condition is satisfied, said request condition being based on at least one previous grant of uplink transmission resource, (b) at the primary station, granting to the secondary station an uplink transmission resource to be used.
摘要:
A communication device (1) for communicating in a multiple channel communication system comprises means (9) for calculating an effective noise level of one of the channels of the system by applying an expectation operator to an estimated noise level affecting the channel based on time varying characteristics of the estimated noise level. The calculation of the effective noise level may also be based on an estimated path loss. The calculation of the effective noise level may also be based on an initial power level allocated to the respective channel. The effective noise level calculated for each channel may be employed in calculating power levels to be allocated to the respective channels.
摘要:
A radio communication system includes a primary station which is arranged to transmit a series of data packets to a secondary station which operates according to an ARQ scheme for acknowledging correct reception of each packet. The primary station transmits error correction information relating to any packets that are not received correctly, thereby enabling the secondary station to extract correctly the data. The data packets are transmitted via a plurality of logical channels, so that an error in transmission of one packet does not hold up transmission of packets in other channels. Transfer of data transmission from one primary station to another is done by transferring each channel when correct reception of a data packet on that channel has been acknowledged, thereby avoiding the extra signaling required in transferring logical channels in which a data packet has been received in error and the error correction transmissions have not been completed.
摘要:
A radio communication station in a radio communication system having a plurality of radio communication devices, derives a quantisation parameter and transmits the quantisation parameter to the radio communication devices for use in subsequent quantisation of a channel state metric. The radio communication devices receive the quantisation parameter, determine a channel state metric, quantise the determined channel state metric by applying quantisation ranges indicated by the quantisation parameter, determine a data value indicative of the quantised channel state metric, and transmit a signal conveying the determined data value as a random access transmission.
摘要:
The present invention relates to a method for communicating between a primary station and at least one secondary station, comprising the steps of (a) at the primary station, requesting the secondary station to transmit channel quality information representative of the channel quality and, (b) at the secondary station, responsive to the request of step (a), transmitting to the primary station the channel quality information, wherein step (b) comprises substep (b1) wherein the secondary station further transmits with the channel quality information an indication of a secondary station buffer status.
摘要:
The present invention relates to a method of exchanging data between a first station and a second station, said data being exchanged in packets. Said method comprises the steps of: receiving a packet from the second station; decoding said packet; —determining whether to transmit to the second station a resource allocation message on a signalling channel; if a said resource allocation message is transmitted, further transmitting to the second station a first indicator signal on an indicator channel; if both the decoding has not been successful and the said resource allocation message is not transmitted, transmitting to the second station a second indicator signal on the indicator channel.
摘要:
The present invention relates to a method for communicating in a network having a primary station and a plurality of secondary stations, said method comprising a step of, at the primary station, (a) configuring at least one downlink channel from the base station to a first secondary station, step (a) comprising (a1) signalling a first set of at least one parameter indicative of precoding applied to a first transmission from the base station to the first secondary station; (a2) signalling a second set of at least one parameter indicative of precoding applied to a second transmission from the base station to at least one second secondary station, wherein said step (a2) is carried out so that the second set of parameters contains less information than the first set of parameters.
摘要:
The present invention relates to a method for communicating from a primary station with an array of transmit antennas to a secondary station on a downlink channel, said method comprising steps of, at the primary station, (a) configuring the downlink channel, step (a) being subdivided into steps of: (a2) computing a precoding to be applied during a corresponding transmission from the primary station to the secondary station for each of an array of transmit antennas; (a3) applying a reversible transform N to the precoding, thus ascertaining a set of precoding coefficients substantially representative of the precoding in a transform domain; (a4) computing a set of parameters comprising at least one parameter, said parameter being substantially representative of the coefficients obtained at step (a3); (a5) signaling the set of parameters to the secondary station; (b) transmitting data to the secondary station substantially according to the precoding computed at step (a2).
摘要:
A radio station (100) receives a first signal (R) indicative of a scheduled resource which will be used to transmit a second signal (D1, D2) to the radio station (100). In response to receiving the first signal (R), the radio station (100) is adapted to receive the second signal (D1, D2) using the scheduled resource and, prior to receiving the second signal (D1, D2), transmit an indication of received signal quality (CQI).
摘要:
A receiver (13) of user equipment, UE, (10) of a Universal Mobile Telecommunications System, UMTS, network receives a digitally encoded radio signal over a downlink (11) from a base station (12). A Digital Signal Processor, DSP, (14) of the UE (10) estimates BER of data bits of power control commands received in the signal during an out of synchronisation procedure. More specifically, the DSP (14) samples the amplitude with which the data bits are received and determines a ratio of functions of one or more moments of the sampled amplitudes. The DSP (14) then compares the determined ratio to one or more values of BER for different ratios in a look-up table to estimate BER.