摘要:
A method for channel set up in a communication system that comprises first and second radio network controllers supporting different respective first and second radio access technologies in respective first and second wireless networks is described. The first radio network controller transmits a downlink channel setup request to the second radio network controller of the second wireless network and receives a downlink channel setup acknowledgement from the second radio network controller of the second wireless network.
摘要:
An apparatus for use in allocating resource in a wireless communication system employing transmission control protocol (TCP) based data transfer between a network and a wireless subscriber communication unit comprises a scheduler (428) located in the network, wherein the scheduler buffers a TCP data segment for downlink (DL) transmission. A transmitter is arranged to transmit the buffered TCP data segment to the UE; wherein the message indicates an allocation of DL resources plus sufficient uplink resources to transfer a stand-alone ACK data segment (530). In this manner, for example in large bulk data transfer cases, a reduced latency may be achieved that may lead to improved throughput, due to the fact that the overall throughput may be limited by the window size (i.e. number of unacknowledged segments) rather than the throughput possible across the air interface.
摘要:
A method of determining a radio link quality state in a wireless communication system by predicting a signal quality metric of a secondary channel in the absence of the second signal. The predicted signal quality metric may be determined from a received reference signal on a first channel and a measured interference level of the second channel.
摘要:
Paging in a wireless network is described. A user equipment (UE) in idle mode is paged by sending a message on a control channel having an allocation of resources for a shared channel and a radio network temporary identity (RNTI) associated with other UE's including the UE. The paging message may include an International Mobile Subscriber Identity (IMSI) or a Temporary Mobile Subscriber Identity (TMSI).
摘要:
A method, user equipment, network equipment and a system for initiating a wireless connection and subsequent communication over a shared physical resource in a wireless communication system between user equipment and network equipment comprising: processing a UE-derived temporary identifier; determining a set of channels that the user equipment will monitor; implicitly or explicitly communicating this channel set; communicating the temporary identifier as an identifier to the network equipment; communicating a downlink message on a channel belonging to the determined channel set conveying the temporary identifier and a description of a scheduled resource on a shared channel, the scheduled resource comprising a resource allocated to the user equipment by the network equipment; and communicating data on the scheduled resource in response to the downlink message.
摘要:
A User Equipment, UE, (101) of a cellular communication system (100) transmits scheduling assistance data to a base station (105) comprising a base station scheduler (209) which schedules packet data. The scheduling assistance data relates to packet data communication of the UE (101). The scheduling assistance data is generated by a scheduling assistance data generator (223) coupled to a packet data transmit buffer (221) associated with the packet data transmission. A first transport channel controller (217) allocates other data to a first transport channel and a retransmission controller (219) operates a retransmission scheme for this transport channel. A second transport channel controller (225) allocates the scheduling assistance data to a signalling transport channel and a transport channel multiplexer (227) combines the two transport channels as multiplexed channels on a single physical resource. The transmission reliabilities for the retransmission and non-retransmission transport channels may be individually optimised.
摘要:
A system is provided for scheduling data from a network element (101), such as an RNC (101), of a cellular communication system to at least one base station (103) across a shared communication link (105) shared between a plurality of cell sectors (107-111). The apparatus comprises resource allocators (113, 115, 117) each of which schedules data for a single cell sector (107-111). A resource determination processor (119) dynamically determines a resource requirement parameter for at least one of the cell sectors (107-111). The resource determination processor (119) is coupled to a resource assignment processor (121) which dynamically assigns a resource availability of the shared communication link (105) to each of the resource allocators (113, 115, 117) in response to the resource requirement parameter. The resource allocators (113, 115, 117) then schedule data for communication over the shared communication link in response to the resource availability. The invention provides improved utilisation of a shared communication link (105) while allowing independent scheduling by resource allocators associated with a single cell.
摘要:
An arrangement and method for session control in a wireless UMTS radio access network (100) by performing creation and deletion of application-specific packet sessions (PDP contexts) in the network, with application-specific QoS parameters, without requiring the explicit cooperation of the application software (either via software API or modem AT command). This allows session set-up and tear-down control of dedicated packet sessions for particular data services, in a UMTS 3G mobile wireless network, with application-specific QoS parameters, with umodified applications operating over the network.
摘要:
Embodiments of the present invention distinguish a first type of data packet transmitted over a random access communication channel of a wireless cellular communications system from a second type of data packet transmitted over the same random access communication channel, allowing the first and second data packet data packet types to share a common set of rando m access channels through the use of different types of channel coding. This reduces data packet collision probability by eliminating the need to segregate the set of random access channels according to data packet type. Backward compatibility with legacy base stations that handle only the first data packet type is maintained in that no changes to the first data packet type are needed.
摘要:
An Orthogonal Frequency Division Multiplex (OFDM) communication system comprises OFDM transmitters (103-109) and an OFDM receiver (101) . The system comprises a subcarrier status data controller (200) for transmitting subcarrier status data to the OFDM receiver (101) . The subcarrier status data indicates the active subcarriers of the OFDM transmitters (103-109) . The OFDM receiver (101) further comprises a subcarrier status processor (203) which receives the subcarrier status data and a channel estimator (205) which determines channel estimates for at least an air interface communication channel from the first OFDM transmitter (103) and an air interface communication channel from the interfering OFDM transmitter (105) . An interference mitigation processor (207) performs interference mitigation of the interference in response to the subcarrier status data and the channel estimates thereby providing improved recovery of the data from the first OFDM transmitter (103) .