Abstract:
Various methods and apparatuses provide unicast channel data acquisition, such as antenna information, from MBMS subframes. A method of operating a wireless communications network infrastructure entity is disclosed comprising defining a subframe (400) comprising a unicast symbol (401) in a predetermined first symbol position within said subframe (400), said unicast symbol (401) comprising at least a first unicast antenna reference symbol; defining a second symbol position (403) within said subframe (400) for containing at least a second unicast antenna reference symbol, said second symbol position (403) being a multicast symbol position for transmitting a multicast symbol; and transmitting said subframe (400) wherein said unicast symbol (401) comprises said at least first unicast antenna reference symbol and wherein said multicast symbol (403) comprises said at least second unicast antenna reference symbol.
Abstract:
A wireless communication device for receiving a frame (200) corresponding to a transmission time interval, the frame having a control channel (210) including at least two control channel elements (212, 214) and an embedded bit sequence, the location of which indicates a portion of the control channel used for radio resource assignment, wherein the portion of the control channel used for radio resource assignment may be less than the entire control channel of the frame having the embedded bit sequence, and wherein the at least two frames may use different portions of the control channel for radio resource assignment.
Abstract:
A method and apparatus is provided for transmitting an orthogonal frequency domain multiple access (OFDMA) signal including a synchronization channel signal transmitted within a localized portion of a bandwidth of the OFDMA signal (818), the synchronization channel signal having predetermined time domain symmetry within the localized portion of the bandwidth (816). The synchronization channel signal enables an initial acquisition and cell search method with low computational load which provides OFDMA symbol timing detection and frequency error detection by differential processing of sequence elements of the synchronization channel signal (1112) and frame boundary detection and cell specific information detection (1114) in an OFDMA system supporting multiple system bandwidths, both synchronized and un-synchronized systems, a large cell index and an OFDMA symbol structure with both short and long cyclic prefix length.
Abstract:
A method and apparatus is provided for transmitting an orthogonal frequency domain multiple access (OFDMA) signal including a synchronization channel signal transmitted including a plurality of sequence elements intereleaved in time and frequency (610, 640). The synchronization channel signal sequence elements enable an initial acquisition and cell search method with low computational load by providing predetermined time domain symmetry (702, 704) for common sequence elements in OFDMA symbol periods (620, 660) for OFDMA symbol timing detection and frequency error detection in an OFDMA system supporting multiple system bandwidths, both synchronized and un-synchronized systems, a large cell index and an OFDMA symbol structure with both short and long cyclic prefix length.
Abstract:
A wireless communication network (100) wherein information is communicated in frames comprising multiple sub-frames, including grouping a terminal in first and second groups, assigning the first and second groups to less than all sub-frames in a frame, assigning a control channel of at least one assigned sub-frame to the first and second groups.
Abstract:
A method in a transmitter for data collision avoidance in an uncoordinated frequency hopping communication system is disclosed. The base station (104) first determines (304) that a first data set to be sent to a first device (105) and a second data set to be sent to a second device (107) are scheduled to be transmitted simultaneously on a first frequency of a frequency hop-set. The device then transmits (310) the first data set on the first frequency of the frequency hop-set. The base station delays (312) transmission of the second data set, and finally transmits (316) the second data set on a second frequency of a frequency hop-set.
Abstract:
The present invention provides a method for receiving broadcast data in a system where broadcast data is transmitted on a plurality of frequencies. A user device monitors (302) a first frequency (108) for broadcast data to be transmitted on the first frequency. The device receives on the first frequency a notification of a broadcast data session which is to be sent on a second frequency (114) that is different from the first frequency. The device then determines a configuration associated with the second frequency and in accordance with receiving the broadcast data session and then configures (310) to receive the broadcast data session in accordance with the determined configuration. After receiving the broadcast data session, the device returns to monitoring the first frequency.
Abstract:
A wireless communication terminal including a controller coupled to a wireless transceiver that receives a first control message on an anchor carrier, wherein the first control message includes a resource assignment for the anchor carrier. The transceiver is also configured to receive a second control message on the anchor carrier, the second control message associated with a set of component carriers, wherein the set of component carriers are distinct from the anchor carrier. The controller determines a resource assignment for at least one component carrier in the set of component carriers using both the first and the second control messages.
Abstract:
A base station communicates a positioning reference signal (PRS) to wireless communication devices over a downlink in a wireless communication system by encoding a PRS into a first set of transmission resources, encoding other information into a second set of transmission resources, multiplexing the two sets of resources into a subframe such that the first set of resources is multiplexed into at least a portion of a first set of orthogonal frequency division multiplexed (OFDM) symbols based on an identifier associated with the base station and the second set of resources is multiplexed into a second set of OFDM symbols. Upon receiving the subframe, a wireless communication device determines which set of transmission resources contains the PRS based on the identifier associated with the base station that transmitted the subframe and processes the set of resources containing the PRS to estimate timing (e.g., time of arrival) information.
Abstract:
A wireless communication infrastructure entity including a transceiver coupled to a controller configured to generate parity bits based on scheduling grant information and to encode the parity bits based on additional scheduling grant information not used to generate the parity bits, wherein the encoded parity bits combined with the scheduling grant information. The additional scheduling grant information may be transport block size or redundancy version information.