摘要:
A method for multimedia broadcast and multicast service, MBMS, notification indicator detection from multiple MBMS notification-indication channel, MICH, frames in a User Equipment operating in a Wideband Code Division Multiple Access system is disclosed. The method comprises determining a desired number of MICH frames; upon connection with a NodeB, receiving an available number of MICH frames within a modification period; decoding notification indications of the received MICH frames; determining a majority value being the number of notification indications having a most frequent value of the decoded notification indications; and if a ratio between the majority value and the desired number of MICH frames is above a threshold value, determining the correct notification indicator to be the most frequent value, or if the ratio between the majority value and the desired number of MICH frames is less than the threshold value, connecting to the NodeB; receiving further MICH frames; and decoding notification indications of the received MICH frames such that the correct notification indicator is achieved. A computer program and a User Equipment apparatus are also disclosed.
摘要:
Power saving operation of user equipment in a cellular communication system. Mobile User Equipment UE is operated in a first mode in which radio functions are enabled. In response to a predetermined condition, the UE is operated in a power saving mode involving disabling all radio functionality for a first period of time during which no connection is maintained with a cellular communication system serving node. After the first period of time, the UE ascertains (305) whether any attempts were made to contact it during the first period of time and if so (307) whether any of the attempted contacts is characterized by an attribute that matches a predefined attribute. If any of the attempted contacts is characterized by the attribute that matches the predefined attribute, then a user alarm is activated (309). If the response to the user alarm has been made (311), then the UE is again operated in the first mode (313); otherwise, the UE is again operated in the power saving mode (315).
摘要:
The automatic frequency correction value applied by a receiver is altered to minimize long-term drift of a path delay profile. In one embodiment, the phase or timing error resulting from constant frequency corrections is accumulated, and an estimated frequency correction value is selectively quantized into an actual frequency correction value in response to the accumulated phase/timing error. The quantized value above or below the estimate is selected to minimize the accumulated phase/timing error that gives rise to path delay profile drift. In another embodiment, a timing circuit measures the instantaneous path delay profile drift incurred with each frequency correction, and integrates the instantaneous drift measurements over time to yield a path delay profile drift. The drift (or its rate of change) is then used to adjust a frequency correction value so as to minimize the drift.
摘要:
A method and a receiver for Turbo decoding a received Turbo encoded bitstream with a first channel decoder (16a) which uses a first Turbo decoding algorithm to produce a first decoded bitstream and a first error measure, and a second channel decoder (16b) which uses a second Turbo decoding algorithm to produce a second decoded bitstream and a second error measure. The decoders are operable in parallel. A selector (301) is arranged to select, for further processing in the receiver, the decoded bitstream and the error measure from the decoder which has the most favorable error measure.
摘要:
A power level of signals transmitted in a wireless communications system under a first or a second scrambling code, is controlled in an inner power control loop, where a quality measure (51) is repetitively estimated and control commands generated from the quality measure (51) and a quality measure reference value (56), which in an outer power control loop is adjusted in dependence on a performance level (52) calculated for signals received during a time interval. A first value (54) is adjusted in dependence on a performance level (52) for time intervals with all signals transmitted under the first scrambling code and used during such time intervals. A second value (55) is adjusted in dependence on a performance level (52) for time intervals with at least some signals transmitted under the second scrambling code and used during at least a part of such time intervals.
摘要:
In third generation mobile communications networks, e.g. CDMA systems, a mobile station intending to access a base station transmits a request for access to a base station and waits for a response in the form of an indicator signal. Both detecting a signal as an acknowledgement message without one being sent from the base station and failing to detect such an acknowledgement message can give rise to noise and interference in the whole cell. The invention provides a method and a user equipment for determining the received signal strength in an access slot in a downlink channel and for asserting whether detection of an indicator signal from the base station in the access slot in the downlink channel is reliable. Hereby, a more secure reception of indicator signals can be obtained, which leads to reduced interference and noise in the whole cell.
摘要:
A method in a network node (150) for assisting a wireless terminal (145) to select an access node for a communication in a wireless communication network (100). The wireless communication network comprises a cellular network access node (130) and a wireless local network access node (140). The network node (150) establishes a state of a wireless local network unit (210) in the wireless terminal, obtains information of a radio condition and/or a load condition of the respective wireless local network access node and cellular network access node, and then determines which access node to use out of the wireless local network access node and the cellular network access node for the communication, based on the established state of the wireless local network unit and the obtained radio condition and/or load condition of the respective wireless local network access node and cellular network access node.
摘要:
The present invention relates to a method and a device for increasing performance in a radio communication system (12). The method comprises obtaining an indication that it is desirable to avoid that a communication terminal (5) of the system (12) enters a power saving mode, the power saving mode being entered upon expiry of a timer of the communication terminal (5). The method further comprises allowing a scheme of scheduled periodic exchange of data between the communication terminal (5) and a node (8) of a network (10) of the system (12), intended to periodically reset the timer before its expiry by means of said periodic exchange of data. The method also comprises exchanging data between the communication terminal (5) and the network node (8) over a radio interface (11) in accordance with the scheme, whereby entry of the communication terminal (5) into the power saving mode is prevented.
摘要:
The invention relates to network nodes and methods therein for network congestion mitigation. A method in a first network node comprises entering a congestion mitigation mode, CMM; receiving a service request originating from a wireless device; and, in response to said service request, when the service request fulfills a criterion: redirecting the wireless device to a predefined e MBMS session, thereby enabling an informative alternative to rejection of the service request.
摘要:
A method in a wireless communication device (110) for starting a Circuit Switched FallBack, CSFB, in a wireless communication system (100) is disclosed. The wireless communication system (100) comprises one or more Long-Term Evolution, LTE, networks (120) and one or more 2nd or 3rd Generation, 2G/3G, networks (130). When the communication device (110) is camping in an LTE network (120) and starts a Circuit Switched, CS, service, the wireless communication device (110) sends a CSFB request to a Mobility Management entity, MME (122), via an access node (124) in the LTE network (120) and starts a first timer and/or a first counter upon sending the CSFB request. When the first timer and/or the first counter is expired and no response to the CSFB request has been received from the LTE networks, it starts a cell search procedure in the 2G/3G networks (130 and starts the CS service via a target cell selected by the cell search procedure in the 2G/3G networks.