Abstract:
A wireless communication method and system for assigning multi-paths to Rake receiver fingers. A Rake finger assignment database is established in which multi-path signals (300) are categorized into a verified group and an unverified group. Each multi-path is assigned to an individual bin in the database. Each bin includes a pilot phase data field (310), an antenna data field (315), a code data field (320), an averaged signal strength data field (325), an assigned flag data field (330), a verification flag data field (335), an update flag data field (340), an assigned Rake finger number data field (345) and an assignment time counter data field (350). The multi-path signals in the verified group are further categorized into an assigned subgroup and an unassigned subgroup. During a measurement interval, each of a plurality of newly measured multi-path signals is compared to the multi-path signals in the database and is processed accordingly.
Abstract:
A personal communicator in the form of a wireless transmit/receive unit (WTRU) can communicate in multiple modes to provide a user with seamless roaming, handover, and session continuity between multiple network or peer to peer communications. The WTRU has selectively operable transceiver components that are configured for wireless mobile network communications with mobile network base stations, wireless local network communications with local network base stations, and wireless peer to peer communications with other WTRUs. Various methods are provided utilizing the WTRU's multiple network communicating capabilities.
Abstract:
A method and system for generating a secret key from joint randomness shared by wireless transmit/receive units (WTKUs) are disclosed. A first WTRU and a second WTRU perform channel estimation to generate a sampled channel impulse response (CIR) on a channel between the first WTRU and the second WTRU. The first WTRU generates a set of bits from the sampled CIR and generates a secret key and a syndrome, (or parity bits), from the set of bits. The first WTRU sends the syndrome, (or parity bits), to the second WTRU. The second WTRU reconstructs the set of bits from the syndrome, (or parity bits), and its own sampled CIR, and generates the secret key from the reconstructed set of bits.
Abstract:
The present invention is related to a generalized rake receiver for a wireless communication system. The rake receiver comprises a plurality of finger correlators and a plurality of escort correlators. Each finger correlator demodulates each multipath components of the transmitted signal. The escort correlator is used for multipath tracking for optimal finger placement and weight estimation for demodulation. The escort correlator is located in vicinity of multipath center and is programmable within a chip and at a resolution finer than a chip. Weight vector is estimated using the estimate of the total base station energy based upon the pilot information from the base stations in soft-handoff.
Abstract:
In a wireless communication system comprising at least one wireless transmit/receive unit (WTRU), a base station, and a radio network controller (RNC), a method for constant envelope orthogonal frequency division multiplexin (CE-OFDM) modulation (430) comprises the WTRU (110) performing an inverse transform on the data (420). The WTRU next performs constant envelope (CE) modulation on the data and transmits the CE-OFDM data to the base station. The base station receives the data and CE demodulates the data. The base station performs a transform on the demodulated data.
Abstract:
A cellular network (10) monitors the location of a wireless transmit/receive unit (WTRU) (15). The cellular network (10) is also aware of the location of each data pump (14) capable of communicating with the cellular network (10). The data pump (14) is capable of transmitting data at a high data rate. The cellular network (10) coordinating a high data rate transfer between the WTRU (15) and the data pump (14).
Abstract:
A personal communicator in the form of a wireless transmit/receive unit (WTRU) can communicate in multiple modes to provide a user with seamless roaming, handover, and session continuity between multiple network or peer to peer communications. The WTRU has selectively operable transceiver components that are configured for wireless mobile network communications with mobile network base stations, wireless local network communications with local network base stations, and wireless peer to peer communications with other WTRUs. Various methods are provided utilizing the WTRU's multiple network communicating capabilities.
Abstract:
A cellular network (10) monitors the location of a wireless transmit/receive unit (WTRU) (15). The cellular network (10) is also aware of the location of each data pump (14) capable of communicating with the cellular network (10). The data pump (14) is capable of transmitting data at a high data rate. The cellular network (10) coordinating a high data rate transfer between the WTRU (15) and the data pump (14).
Abstract:
A wireless communication method and system for assigning multi-paths to Rake receiver fingers. A Rake finger assignment database is established in which multi-path signals (300) are categorized into a verified group and an unverified group. Each multi-path is assigned to an individual bin in the database. Each bin includes a pilot phase data field (310), an antenna data field (315), a code data field (320), an averaged signal strength data field (325), an assigned flag data field (330), a verification flag data field (335), an update flag data field (340), an assigned Rake finger number data field (345) and an assignment time counter data field (350). The multi-path signals in the verified group are further categorized into an assigned subgroup and an unassigned subgroup. During a measurement interval, each of a plurality of newly measured multi-path signals is compared to the multi-path signals in the database and is processed accordingly.