摘要:
Die Erfindung betrifft ein Verfahren zur Übertragung von Datenpaketen in einem Funksystem, zwischen einem Sender und einem Empfänger, mit folgenden Schritten: a. Ermitteln einer Soll-Sendeleistung für ein Datenpaket in Abhängigkeit von einer gewünschten Empfangsqualität; b. Übertragen des Datenpakets mit einer tatsächlichen Sendeleistung; c. Ableiten einer neuen Soll-Sendeleistung unter Berücksichtigung der tatsächlich aufgewendeten Sendeleistung und der vorgegebenen Soll- Sendeleistung, welche in Abhängigkeit von der für die Übertragung vorgesehene Empfangsqualität definiert wird ; d. Wiederholtes Übertragen des Datenpakets mit der neuen Soll-Sendeleistung.
摘要:
A method and an arrangement for obtaining efficient radio resource utilization in a communication network comprising a first communication network entity (10), a second communication network entity (15) connected to said first communication network over a communication interface and one or more user equipments (18) transmitting data to said second communication network entity (15) over a radio interface. The user equipments (18) perform the step of autonomously selecting a hybrid automatic retransmission request (HARQ) operating point in order to efficiently deliver transmitted data.
摘要:
A method of implementing the service treatment by the functional entity in the service control layer, characterized in that the functional entity in the service control layer acquires the information of the bearer network type used by the current user equipment, determines the bearer network type according to the information of the bearer network type, and implements the service treatment corresponding to the bearer network type. The present invention can transfer the information used for each other between the service control layer and the bearer layer which are evolving completely independently. It makes the implementation of the specific service to have a independence of the bearer network. The different service can be realized in the service control network according to the feature of the bearer network. The service treatment above comprises all the service relating to the communication network provision.
摘要:
A display apparatus including a main body, a power key provided in the main body to turn on/off power, a display to display an image thereon a signal input part to receive an image signal from an external device, a power supply to supply the power to circuits of the display apparatus, and a controller to detect the image signal input through the signal input part, to control the power supply and the display to convert the display apparatus into an automatic off mode in which the power supplied to the circuits is cut off when a normal image signal is not input, to maintain the automatic off mode if the image signal input is determined to be abnormal when the power key is input in the automatic off mode, and to display the image if the image signal input is determined to be normal. Thus the display apparatus and control method thereof prevents a user from being confused as to whether the power key is input to the display apparatus in a power off mode or in an automatic off mode, and is thereby simply operated by the user.
摘要:
A computing system wherein communication between a host computer and peripheral units, e.g. computer mouse and keyboard, is performed using RF signals. The host computer and the peripheral units each contain a transceiver for managing and transmitting the RF communication messages. An acknowledgement is sent by the receiving transceiver to the sending transceiver to signify that the message was successfully received. If no acknowledgement is received by the sending transceiver, a subsequent RF communication message is sent until an acknowledgement is received. A sleep mode is invoked between messages to conserve battery power in the peripheral units, and the peripheral units send a report message to the host when awaking periodically, or by a user demand, from the sleep mode signifying that the peripheral unit is active and ready to send or receive messages.
摘要:
The present invention provides a power control method of a forward-acknowledgement channel and acknowledgement control method thereof, by which acknowledgement or non-acknowledgement information for a boost mode operation used for a quality of service (Qos) can be efficiently received. The present invention includes the steps of receiving packet transmission information in a base station and determining a power of a transmission signal transmitted via the forward-acknowledgement channel (F-ACKCH) using an increment for a reference transmission power value of a boost mode in case that the packet transmission control information contains a boost operation.
摘要:
Wireless devices in (10, 20, 30 etc) in an ad hoc network each select a channel on which to operate such that conflicts with neighbouring devices are avoided. Each device (20) has a normal power output, giving it a normal range (31) and an enhanced power output, giving it an extended "inhibition" range (33). Initially each device (20) transmits at the enhanced power level, such that it can be detected by devices (40, 50) within the extended range (33). If it detects other devices transmitting on the same channel, it may change to another channel. Once a channel has been identified on which no conflict is detected, the device (20) switches to the normal power level. By initiating the channel selection process at the enhanced level, conflicts between the transmissions of devices (20, 40), which would be detectable at a device (30) within the normal range of both, can be avoided despite the two devices (20, 40) not be able to detect each other directly at the normal power level. To conserve battery power, the process is arranged to have the devices operate at the enhanced power for the minimum time necessary, by dropping to the normal level when a suitable channel has been identified with a reasonable degree of certainty.
摘要:
A radio network entity in charge of outer loop power control for a communication with a mobile radio is informed about erroneous data units, requested retransmissions, and/or data units transmission attempts associated with the data units sent by the mobile radio to the radio network. Another radio network entity, which sends a transmission power control signal to the mobile radio to control the mobile's transmit power level based on a target value, detects errors in data units received from the mobile radio and requests retransmission. Information associated with the requested retransmission is used to generate a revised target value. The target value may be revised by an outer loop power controller node or by an outer loop power controller entity in the same node as an ARQ entity that generates the information about erroneous data units, requested retransmissions, and/or data units transmission attempts associated with the data units sent by the mobile radio to the radio network.
摘要:
The present invention provides a method, a mobile terminal device and a system for determining a transmission power factor. Further, software tools and computer programs being based on embodiments of the method of the invention are also provided. During an uplink of data between a mobile terminal device and a base station via a code division multiple access (CDMA) system supported by automatic repeat request (ARQ) first transmission containing original data and re-transmissions of different order containing supplementary information are communicated. The i-th re-transmissions are based on the automatic repeat request (ARQ). The transmission power factor to be determined is operable with an i-th re-transmission. A first and a second error quantity are obtained from an evaluation of status information items received in accordance with the automatic repeat request (ARQ). The first error quantity is equal to an number of ARQ relating i-th re-transmissions whereas the second quantity is equal to a number of i-th re-transmissions being responded by status information items each containing an ARQ relating non-acknowledgement item. The first error quantity and the second error quantity allow for deriving an i-th error ratio and depending on that a transmission power correction factor is calculated. The transmission power factor being operable with i-th retransmissions is determined finally from a current valid transmission power factor and the calculated transmission power correction factor.
摘要:
Systems and techniques are disclosed relating to telecommunications which include transmitting a plurality of data groups to a receiver at a first power level, retransmitting a first one of the data groups to the receiver at a second power level lower than the first power level, providing feedback from the receiver relating to the retransmission of the first one of the data groups, and retransmitting a second one of the data groups to the receiver at a third power level different from the second power level, the third power level being a function of the feedback.