摘要:
Embodiments of the invention provide method and apparatus for generating a structure in an orthogonal frequency division multiplexing communication system having a transmitter with a least one transmitting antenna, said method comprising; composing a frame with a time domain and a frequency domain, wherein the frame has a transmission time interval in the time domain and locating a pilot signal, having pilot power level, from a first at least one antenna into two orthogonal frequency division multiplexing symbols of said frame.
摘要:
Spreading factor (SF) estimation in a code division multiple access (CDMA) spread spectrum system where the SF of the data channel may change on a frame-by-frame basis to reflect a change in the data rate for each corresponding frame. The SF estimation methods despread the data channel for all possible SF values, perform maximal ratio combining (MRC) when resolved multipaths occur, take the absolute value of the MRC results, and average these absolute values over many symbol periods to obtain decision statistics for the various SF's. The SF estimation methods then post-process these decision statistics and make a SF decision.
摘要:
A method of power saving for a wireless transceiver (FIGS. 1 and 2) is disclosed. The transceiver has an active power mode (504) and a reduced power mode (510). The transceiver is operated in the reduced power mode (510) and monitors transmissions from a remote wireless transmitter while in the reduced power mode. The transceiver identifies a transmission from in the remote wireless transmitter by a transceiver identity included in the transmission (FIG. 6, UE identification). The transceiver transitions to the active power mode (512) in response to identifying the transmission.
摘要:
A broadcast/multicast transmission format includes a data portion and a cyclic prefix (CP) coupled to the traffic data portion. A method and system for providing broadcast/multicast transmissions with the application to communication systems that perform broadcast or multicast transmission is also disclosed. The addition of a pilot to the data portion of the transmissions is also disclosed.
摘要:
Methods and apparatus are provided for a User Equipment (UE) to receive over a first set of resources a Physical Downlink Control CHannel (PDCCH) of a first type including Control Channel Elements (CCEs) of a first type, to receive over a second set of resources a PDCCH of a second type including CCEs of a second type, and to determine a resource for transmitting an acknowledgement signal in response to detecting the PDCCH of the first type or in response to detecting the PDCCH of the second type.
摘要:
Apparatus and method for adjusting at a user equipment a power level of a first signal type transmitted over a set of resource elements (REs). The method includes transmitting the first signal type with a first power level over a first set of REs, and transmitting the first signal type with a second power level over a second set of REs, wherein the second power level is higher than the first power level and the second set of REs is a sub-set of the first set of REs.
摘要:
Methods and apparatus are provided for a User Equipment (UE) to transmit signals in response to the reception of a Downlink Control Information (DCI) format transmitted from a base station of a communication system. The DCI format may provide only the frequency resources for the transmission of signals by the UE, while other parameters associated with the transmission of signals by the UE may be either predetermined or known to the UE through other signaling from the base station. The frequency resources used for the transmission of signals by the UE may be a sub-set of the frequency resources indicated by the DCI format and the determination of this sub-set by the UE may be either deterministic or pseudo-random.
摘要:
Disclosed is multiplexing transmissions of Uplink Control Information (UCI) signals having variable payloads from User Equipments (UEs). The UCI transmission uses a first format type if its size is less than or equal to a predetermined values and it uses a second format type if its size is greater than a predetermined value. When the first format type is used the UE multiplexing is through a first method while when the second format type is used the UE multiplexing is through a second method which is different than the first method. The structure of the second format type is the same as the structure used for the transmission of data information by UEs. The UEs can also be grouped and UCI transmission can be triggered through the reception of control signaling addressing a group of UEs and indicating UCI transmission by a sub-group of UEs in the group of UEs.
摘要:
A method and apparatus for multiplexing Uplink Control Information (UCI) with data information in a Physical Uplink Shared CHannel (PUSCH) transmitted over multiple spatial layers where aspects of the UCI multiplexing include the determination of the number of coded UCI symbols in each spatial layer when the data information is conveyed using multiple Transport Blocks (TBs), the determination of the number of coded UCI symbols in each spatial layer when the PUSCH conveys a single TB retransmission for a Hybrid Automatic Repeat reQuest (HARQ) process while the initial TB transmission for the same HARQ process was in a PUSCH conveying multiple TBs, and the determination of the modulation scheme for the coded UCI symbols.
摘要:
A method for the partitioning frequency resources used in the transmission of control signals and data signals by user equipments in a communication system. The control signals and data signals are for periodic transmission and dynamic transmission. Also provided is an apparatus and method for user equipments to determine the first frequency unit available for the transmission of dynamic control signals, such as acknowledgement signals associated respective reception of data signals configured through a scheduling assignment by a serving Node B. The utilization of the operating bandwidth is maximized by avoiding fragmentation and facilitates the achievement of reception reliability targets particularly for control signals.