摘要:
A communication device is arranged to transmit data segments over an interface, wherein the communication device comprises transmission management logic. In response to receipt of a data segment for transmission over the interface, the transmission management logic is arranged to determine a sequence number of a data segment to be transmitted and compare the sequence number of the data segment to be transmitted with at least one pending sequence number of a previous data segment. Based on the comparison, the transmission management logic either discards the data segment to be transmitted if the sequence number of the data segment to be transmitted matches the at least one pending sequence number of the previous data segment; or adds the sequence number of the data segment to be transmitted to the at least one pending sequence number and transmits the data segment over the interface if the sequence number of the data segment to be transmitted does not match the at least one pending sequence number.
摘要:
A wireless communication system comprises a plurality of communication networks. A first wireless subscriber communication unit comprises first signal processing logic arranged to support unicast communication in a first communication network. A second wireless subscriber communication unit comprises second signal processing logic arranged to support unicast communication in a second communication network. At least one wireless broadcast communication unit comprises a transmitter and broadcast signal processing logic, operably coupled to the transmitter, and arranged to broadcast communication in a third communication network. The first wireless subscriber communication unit and second wireless subscriber communication unit are capable of simultaneously receiving broadcast communication on the third network together with their respective unicast communication on their respective first or second communication network.
摘要:
A method for generating a high speed downlink packet access (HSDPA) communication comprises concatenating multiple data packets and attaching a header to the concatenated multiple data packets to form an extended multiplexed data packet. The header comprises an indication of a size of each of the multiple data packets. The extended multiplexed data packet is then transmitted to a remote station on a downlink channel.
摘要:
An improved acknowledgement (ACK) prioritization scheme is disclosed that provides ACKs with a lower block error rate (BLER) (as opposed to data) over an air interface, provides a separate radio bearer for ACKs, and successively increases the priority of ACKs for each retransmission required. A lower BLER target for ACKs may be achieved by an increase in transmit (Tx) power, additional coding for the radio bearer, or the use of diversity or hybrid automatic repeat request (ARQ) schemes. After packets are identified as either data or an ACK, they are sent to separate Tx buffers over separate radio bearers. Because the ACKs are transmitted over separate bearers and Tx buffers as compared to the data, ACKs are never queued behind the data, and are effectively prioritized as compared to the data. When retransmissions are required for an ACK packet, the scheduling prioritization is increased successively for each ACK retransmission required.
摘要:
A wireless subscriber communication unit comprises signal processing logic arranged to support a plurality of operational modes in a wireless communication system that comprises a plurality of communication networks. The signal processing logic is arranged to receive unicast communication in a home network that is associated with the wireless subscriber communication unit in a first mode of operation. The signal processing logic is arranged to receive broadcast communication from a second communication network that is not the home network in a second mode of operation such that the broadcast communications are adapted to appear to originate from the home network.
摘要:
A cellular communication system comprises first and second serving communication units supporting respective first and second time division duplex (TDD) modes of operation on respective first and substantially frequency-adjacent second frequency channels comprising a plurality of uplink transmission resources divided into uplink timeslots and a plurality of downlink transmission resources divided into downlink timeslots. The first and second modes of TDD operation are dissimilar and communications cover substantially the same geographic area. The first serving communication unit transmits a plurality of idle periods in the first mode of operation arranged to encompass a time period used by the second serving communication unit for switching communication between downlink and uplink transmissions of the second mode of operation.
摘要:
An apparatus and method exploits a variable frequency response of a radio channel in a time division duplex wireless communication system such that for unscheduled uplink transmissions, the transmission power required for correct reception of the data is minimized. The degree of interference caused to other users in both the serving cell and the neighbor cells is correspondingly reduced and hence system capacit y is improved.
摘要:
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. The invention allows low cost, low power UEs to be designed and built by use of the following techniques: (i) downlink broadcast transmissions are time-slotted; (ii) UEs operate either in half-duplex mode for transmission and reception of unicast services, or in full duplex mode where additional bandpass or additional highpass filtering can be applied to the DL unicast carrier; (iii) when unicast services are active for a UE, the UE informs the network of the broadcast services that are being decoded; and (iv) the network schedules unicast transmissions, broadcast transmissions, or both unicast and broadcast transmissions such that the uplink unicast transmission to a UE is never time-coincident with the broadcast transmissions to that UE.
摘要:
A cellular communication system comprises a first base station (205) serving at least a first user equipment (201) The base station (205) comprises functionality (701, 703, 704) for transmitting a base station duplex capability message to user equipments (201, 203) using a transmission format which is common to a plurality of duplex modes. The first user equipment (201) comprises a transceiver (801) which receives the base station duplex capability message. A RACH characteristics processor (805) determines at least one transmit characteristic for an access message in response to the base station duplex capability message and a RACH transmit controller (807) controls the transmission of an access message to the first base station (205) in response to the at least one transmit characteristic.
摘要:
An apparatus, such as a base station, transmitting signalling information in a cellular communication system whereby a plurality of shared uplink transmission resources is divided into sets of mutually exclusive transmission resources. The apparatus comprises means for granting uplink resources to a wireless subscriber communication unit via a grant message for uplink transmission; means for receiving an uplink transmission from a wireless subscriber communication unit; means for deriving an uplink code resource identifier from the uplink transmission or the grant message; means for assigning at least one downlink code sequence used to carry downlink signalling information associated with the uplink transmission and which is derived using the uplink code resource identifier; and means for transmitting a downlink transmission comprising the at least one downlink code sequence to the wireless subscriber communication unit.