Abstract:
The invention relates to a method (MET1) for transmitting data from a first network node (BS) of a radio access network of a radio communication system to a second network node (MS) of the radio access network, and wherein the method (MET1) comprises the steps of transmitting (M1/6) a first negative acknowledgement (N1) from the second network node (MS), if the second network node (MS) cannot recover error free first data (D1), the first data (D1) being data from a single data source of the radio access network or for a single data sink of the radio access network, determining (M1/11) a combination (COMB1) of the first data (D1) and of at least second data (D2) by applying a superposition of the first data (D1 and the at least second data (D2), the at least second data (D2) being further data from the single data source or for the single data sink, and transmitting (M1/18) the combination (COMB 1) to the second network node (MS). The method further relates to the first network node (BS) for use in the radio communication system and to the second network node (MS) for use in the radio communication system.
Abstract:
A Level-1 (L1) signaling flag is mapped to unused (invalid) bit sequences in Part 1 of the HS-SCCH - that is, Part 1 bit encodings that are not defined in the UTRAN specifications - and a corresponding L1 command is encoded in Part 2. This allows UE (18) to detect early that the HS-SCCH is pure L1 signaling, and the UE (18) may avoid wasting power by not processing an accompanying HS-PDSCH. Alternatively, in CPC HS-SCCH-less mode, the UE (18) may blind decode the HS PDSCH. In one embodiment, a general DRX mode is defined and controlled via L1 signaling. In one embodiment, a UE (18) acknowledgement improves the L1 signaling accuracy. In one embodiment, a L1 signal and UE (18) acknowledgement protocol are utilized to "ping" a UE (18).
Abstract:
Data of a transport block set is to be transmitted in a wireless communication system. The wireless communication system (figure 5) uses adaptive modulation and coding (34) and has a physical layer hybrid automatic repeat request mechanism (40). Segmentation information for potential segmentation of the transport block set is provided (46). The transport block set is transmitted with a first specified modulation and coding scheme. The transport bock set is received (38) and whether the received transport block set is determined to meet a specified quality. When the specified quality is not met, a repeat request (40) is transmitted. The first specified modulation and coding set is changed to a second specified modulation and coding set. In response to the repeat request, the transmit block set is segmented into a plurality of segments (48) supported by the second specified modulation and coding set (34) in accordance with the provided segmentation information. The segments are transmitted and at least two of the segments are transmitted separately. The transmitted segments are received (38). The segmentation process may be applied more than once for a particular TBS transmission.
Abstract:
PROBLEM TO BE SOLVED: To provide a system which is for a legacy device compatible with the IEEE802.11a specification and the 802.11g specification for a wireless LAN (WLAN) and prevents "stomping" of MIMO packets by starting transmission of a subsequent MIMO packet before completing a preceding MIMO packet.SOLUTION: A time-division training pattern for MIMO packets is provided. In this pattern, a first antenna can transmit a short symbol, a first long symbol, and then a SIGNAL symbol in this order. A second antenna can transmit a second long symbol after the transmission of the legacy SIGNAL symbol. The first and second antennas can transmit SIGNAL symbols (associated with MIMO data) substantially simultaneously after transmission of the second long symbol. The invention allows a legacy device to decode the length of a MIMO packet and refrain from the transmission during the period of the MIMO packet.
Abstract:
To improve throughput by reducing the resource used for transmitting a parameter relating to retransmission control and decreasing the overhead of retransmission control signaling. In a case where a retransmission control method is employed in consideration of adaptive MCS control in which the encoding rate can be changed, the scheduling section sets the MCS in accordance with CQI notified from the communication counterpart apparatus. When transmission data is encoded, the RV parameter bit-number setting section sets the number of bits used for signaling the RV parameter to decrease as the encoding rate of the first transmission is decreased and sets the RV parameter based on the number of bits. For example, in a case where the encoding rate R is R > 2/3, two bits are set. In a case where the encoding rate 1/3
Abstract:
PROBLEM TO BE SOLVED: To provide a method for retransmitting packets to a mobile station in a wireless communication system from a plurality of transmission points in the wireless communication system.SOLUTION: A method includes steps of: transmitting packets to a mobile device from a first transmission point among a plurality of transmission points in first transmission; and transmitting the packets to the mobile device from a second transmission point among the plurality of transmission points in second transmission, after transmitting the packets from the first transmission point in the first transmission. The first transmission point and the second transmission point are different transmission points.
Abstract:
PROBLEM TO BE SOLVED: To provide a base station, a terminal, a communication system, and a communication method which are able to efficiently designate physical uplink control channel resources even in the case control information a base station transmits to a terminal is notified via an extended physical downlink control channel.SOLUTION: A terminal for performing communication with a base station monitors a physical downlink control channel disposed in a physical downlink control channel region and an extended physical downlink control channel disposed in a physical downlink shared channel region different from the physical downlink control channel region; if it has detected the physical downlink control channel, it reports response information via a physical uplink control channel resource corresponding to a resource in which the physical downlink control channel was detected; and if it has detected the extended physical downlink control channel, it reports the response information via a predetermined physical uplink control channel resource.
Abstract:
A method and apparatus for assigning automatic repeat request (ARQ)/hybrid-automatic repeat request (H-ARQ) processes in a wireless transmit/receive unit (WTRU) to support enhanced uplink (EU) data transmissions. After parameters associated with the ARQ/H-ARQ processes are configured, the WTRU assigns an ARQ/H-ARQ process for selected data. After transmitting the data, the WTRU determines whether feedback information for the data has been received. The WTRU releases the ARQ/H-ARQ process if an acknowledgement (ACK) message has been received, and retransmits the data if a non-acknowledgement (NACK) message or no feedback information has been received in a predetermined time period while incrementing a transmission counter in the WTRU. When an ARQ/H-ARQ transmission limit has been reached, the WTRU may discard the data or reinitiate the transmission. An ARQ/H-ARQ process assigned for transmission of lower priority data may be preempted for transmission of higher priority data when there is no available ARQ/H-ARQ process.