Abstract: A method is provided for estimating at least one offset of a communication in a multicarrier communication system. The method comprises receiving a plurality of subcarriers wherein the plurality of subcarriers contain the subcarrier that is subject to the distortion; and generating a plurality of first channel estimates for a respective plurality of received subcarriers that are not subject to the distortion. The method further comprises processing a number of the plurality of first channel estimates for the respective plurality of received subcarriers that are not subject to the distortion to generate a second channel estimate for the subcarrier that is subject to the distortion; and estimating an offset associated with the subcarrier that is subject to the distortion.

Abstract: A method of pilot-assisted data communication comprises transmitting a composite signal. The composite signal comprises data, a first pilot sequence with non-cyclic properties; and a second pilot sequence, such that the composite signal within a designated or pre-defined time region of one or more time slots exhibits a cyclic prefixed time domain structure. Both the first pilot sequence and second pilot sequence are transmitted in substantially this same designated or pre-defined time region in one or more time slots.

Abstract: An apparatus for use in allocating resource in a wireless communication system, where the apparatus comprises mapping logic arranged to map one or more services to individual radio bearers of a plurality of radio bearers; reporting logic arranged to indicate buffer occupancy for the plurality of radio bearers; and prioritization logic arranged to prioritize the allocated resource across multiple wireless communication units on a radio bearer basis.

Abstract: Embodiments of the current invention reduce interference from a mobile station (UE) uplink transmission to a received broadcast downlink transmission through a network-based scheduling of time-slotted downlink broadcast transmissions, so that they do not occur concurrently with uplink transmissions.

Abstract: Aspects of the invention include a root node of a wireless communication infrastructure that buffers data packets for transmission by base stations over an air interface. The root node determines a time delay for transmission of a data packet from the root node to each base station, a maximum time delay of those time delays, and a timing latency based upon the maximum time delay. The root node transmits the timing latency to the base stations. In response, each base station initiates transmission of data packets received by the root node after expiration of the timing latency. Alternatively, the root node, instead of the base stations, may buffer the data packets, and transmit them so that they arrive at the base stations at substantially the same time.

Abstract: A cellular communication system comprises a first communication network arranged to use a single cell identifier reuse pattern; a second communication network comprising a cluster of communication cells and arranged to use a common cell identifier reuse pattern for broadcast transmissions. The cellular communication system further comprises management logic (146) having broadcast mode logic (150) operably coupled to at least the second communication network; and a plurality of wireless serving communication units operably coupled to the management logic. The broadcast mode logic (150) applies the same common cell identifier to be used by the plurality of wireless serving communication units in transmitting broadcast communications across the cluster of communication cells in the second network.

Abstract: A time division duplex (TDD) cellular communication system (100) is arranged to support both uplink and downlink communication allocated for unicast time division duplex (TDD) communication that uses a single cell identifier reuse pattern. The TDD cellular communication system (100) comprises a plurality of wireless serving communication units operably coupled to management logic.

Abstract: A cellular communication system (100) is arranged to support a single cell identifier reuse pattern using a first communication. Management logic (146) comprises broadcast mode logic (150) arranged to support a common cell identifier reuse pattern for broadcast transmissions amongst a cluster of communication cells using a second communication. A plurality of wireless serving communication units are operably coupled to the management logic. At least one wireless communication unit comprises logic arranged to support a unicast communication using a first communication cell identifier and logic arranged to support broadcast communication using a common cell identifier (215) to be used by the wireless communication unit in receiving broadcast communication across the cluster of communication cells.

Abstract: A cellular communication system (100) comprises management logic (146) having broadcast mode logic (150) arranged to support a common cell identifier reuse pattern for broadcast transmissions amongst a cluster of communication cells. A plurality of wireless serving communication units is operably coupled to the management logic. At least one wireless communication unit comprises a receiver for receiving a broadcast signal from both a first serving wireless communication unit and a second serving wireless communication unit wherein both the first serving wireless communication unit and second serving wireless communication unit use a common cell identifier (215) reuse pattern for broadcast transmissions to be used by the at least one wireless communication unit in receiving broadcast communication across the cluster of communication cells.

Abstract: An apparatus for use in allocating resource in a wireless communication system, where the apparatus comprises mapping logic arranged to map one or more services to individual radio bearers of a plurality of radio bearers; reporting logic arranged to indicate buffer occupancy for the plurality of radio bearers; and prioritization logic arranged to prioritize the allocated resource across multiple wireless communication units on a radio bearer basis.

Abstract: A cellular communication system comprises a management function having a broadcast mode function; a plurality of wireless serving communication units operably coupled to the management function; and a plurality of wireless subscriber communication units receiving signals from respective wireless serving communication units in an uni-cast mode of operation on a frequency channel comprising a plurality of downlink transmission resources. The broadcast mode function applies a common cell identifier associated with broadcast transmissions from the plurality of wireless serving communication units thereby signalling to the plurality of wireless subscriber communication units that part or all of the transmission resource is to be configured or re-configured for broadcast mode of operation.

Abstract: A method, communication system and communication unit for synchronisation for multi-rate communication by transmitting a signal (FIG. 4A) having a synchronisation portion at a first, predetermined chip rate and containing an indication of chip rate used for a further portion; receiving the transmitted signal, recovering the indication from the synchronisation portion at the first, predetermined chip rate, and recovering information in the further portion at the chip rate indicated by the indication. This provides improved efficiency in supporting multi-chip rates.

Abstract: A communication network element (536) comprises a transmitter (535) for transmitting at least one timing data packet to at least one further network element (524) over both a first communication link and a second communication link and a receiver (537) for receiving two timing data packets from the at least one further network element (524) over the second communication link. The communication network element (536) further comprises signal processing logic (538) operably coupled to the transmitter and receiver and arranged to calculate a transit delay of the at least one timing data packet over the first communication link based on the received two timing data packets from the at least one further network element (524) over the second communication link, wherein the signal processing logic (538) is capable of scheduling at least one transmission across the first communication link to the at least one further network element (524) in response thereto.

Abstract: A communication network element (536) comprises a transmitter (535) for transmitting at least one timing data packet to at least one further network element (524) over both a first communication link and a second communication link and a receiver (537) for receiving two timing data packets from the at least one further network element (524) over the second communication link. The communication network element (536) further comprises signal processing logic (538) operably coupled to the transmitter and receiver and arranged to calculate a transit delay of the at least one timing data packet over the first communication link based on the received two timing data packets from the at least one further network element (524) over the second communication link, wherein the signal processing logic (538) is capable of scheduling at least one transmission across the first communication link to the at least one further network element (524) in response thereto.

Abstract: Methods and systems for determining operating bandwidth in a multi-bandwidth communication system are provided. Determining operating bandwidth in a multi-bandwidth communication system includes receiving a signal having a first signal portion at a first, predetermined bandwidth. The signal contains an indication of an operating bandwidth selected from a plurality of bandwidths used for a further signal portion. The indication is recovered from the first signal portion at the predetermined bandwidth. The information is recovered from the further signal portion at the operating bandwidth indicated by the indication.

Abstract: An arrangement (100) and method for RF filtering in a Node B of a UMTS TDD system by providing: a DAC converter (130) converting digital signals to analog signals; providing a narrow band analogue channel filter (150) filtering the analog signals; and providing a digital pre-equalizer FIR filter (120) coupled before the DAC (120) to filter the digital signals, the digital pre-equalizer filter means substantially correcting for non linear phase response (122) non-ideality and amplitude response non-ideality (124) in the analogue channel filter (150). This provides the following advantage(s): it enables 3GPP Node B co-location specifications to be met while providing both good transmit accuracy and acceptable ISI performance; and it allows filter centre frequency to be field tuned in software, permitting a basic RF single-channel filter to used with its centre frequency being field adjustable to a desired value centred on a UMTS channel.

Abstract: Wireless access equipment provides access to a data network, such as the Internet, through a cellular communication system. A command receiver receives commands from terminal equipment in accordance with an interface protocol, which may be a dial-up protocol. A first access point identifier is stored in an APN store. When a session setup command is received, an APN controller selects between the first and a second access point identifier in response to a parameter of the session setup command. For example, the session setup command may comprise an access point identifier overriding the stored first access point identifier. A session controller proceeds to set up a packet data session of the cellular communication system to the data network using the selected session access point identifier. Embodiments of the invention may provide a flexible and user friendly means of supporting a plurality of network access points through a cellular communication system.

Abstract: Embodiments of the invention provide for allocating spectrum in a wireless communication system that supports simultaneously at least a first mode of operation and a second mode of operation. Logic is arranged for determining a proportion of spectrum required for the wireless communication unit to operate simultaneously in both the first mode of operation and the second mode of operation. Logic for allocating spectrum allocates a temporary guard band between a first portion of spectrum for the first mode of operation and a second portion of spectrum for the second mode of operation for use whilst the wireless communication unit operates simultaneously in the first mode of operation and second mode of operation.

Abstract: An efficient scheme for CDMA coding constructs codes by generating longer code sequences (430) via concatenation, from an existing set of short sequences (410, 420). The sequences may be spreading, scrambling and or training or channel estimation (such as midamble) sequences. The invention allows extension of sequences without performing an exhaustive search for sequences with optimal desired properties, as well as extension of the sequence duration to improve the detection of wanted signals via the use of a conventional matched filter, a multi-user detector or an adaptive filter/equaliser.

Abstract: A User Equipment, UE, of a cellular communication system transmits scheduling assistance data to a base station comprising a base station scheduler which schedules uplink packet data. The scheduling assistance data relates to uplink packet data transmission from the UE. The UE comprises a channel controller which is operable to cause the scheduling assistance data to be transmitted from the UE to the base station in a first physical resource of an uplink air interface. The first physical resource is not managed by the base station based scheduler. The scheduling assistance data may specifically be transmitted in a first transport channel multiplexed with other transport channels on a physical resource. The transport channels may be individually optimized and may have different termination points and transmission reliabilities. Specifically, the transport channel supporting the scheduling assistance data signaling may have a high reliability and be terminated in the base station.