摘要:
The method according to the invention relates in general to transmission in cellular telecommunication systems and in particular to optimization of the data transfer mode. In the method according to the invention the data transfer mode is controlled using the downlink quality measured by the mobile station (MS) and the uplink quality measured by the base station (BTS). For transparent connections it can be determined a desired maximum threshold for the RXQUAL value, and when the uplink or downlink RXQUAL exceeds that maximum threshold (ie. the bit error rate BER exceeds the maximum value), a more error-tolerant channel coding of a lower transmission speed is taken into use and the channel resources available are increased e.g. by growing the number of time slots to keep the user data transmission rate constant.
摘要:
The invention relates to a method for transmitting packet data in a cellular system. The number of time slots in a TDMA frame dedicated for packet transmission varies according to transmission needs and each logical channel consisting of corresponding time slots in consecutive TDMA frames is independent of the other logical channels. A data packet is encoded in an information channel frame consisting of N-1 information bursts, and between the frames there can be an acknowledge/retransmission request burst (ARQ) reporting that a received frame was error-free or requesting retransmission. Thus, the information channel consists of repeated sequences of N bursts. Also disclosed are the structure of a packet paging burst (PP), packet random access burst (PRA), packet access grant burst (PAG), acknowledge/retransmission request burst (ARQ) as well as the use of the bursts in starting and maintaining the transmission.
摘要:
The invention relates to a method to reduce the power consumption of an electronic device comprising at least one voltage regulator. At least one of the regulators (REG1-REG4) is switched off and on according to a predetermined duty cycle during such periods when the electronic device does not require the normal power supply ability of the regulator. This may be realized e.g. in a mobile phone during two successive control channel messages received from a base station when the mobile phone is in a so called power saving mode.
摘要:
The soft handover of a channel or a base station according to the invention functions especially well in a TDMA system with a high TDMA milo. For the time of preparation of handover parallel physical links are formed between the mobile station (MS) and two or more base stations (BTS1, BTS2), whereby these base stations transmit the same signal to the mobile station (MS) in different time slots, and possibly in a different frequency.
摘要:
The present invention relates to reporting cell measurement results associated with a plurality of cells of a cellular communication system. The reporting is transmitted from a station via a radio interface to receiver element of a cell serving the station. The cells are arranged in a reporting order that is to be used by the station for the reporting. The cell measurements are performed by the transceiver station for getting cell measurement results associated with a number of the cells. Relevant cell measurement results are then selected and the selected results are transmitted in the defined reporting order.
摘要:
A method, apparatus and computer program product are therefore provided that may enable a network sending broadcast and/or dedicated priorities to a mobile terminal to also include priorities with respect to a RAT that does not support the priority algorithm. As such, for example, priority parameters for a legacy network that does not support the priority algorithm may be supplied to a mobile terminal to enable the mobile terminal to make cell reselection decisions without running two different cell reselection algorithms in parallel (e.g., a ranking based algorithm and a priority based algorithm). The provided method includes the steps of receiving an indication of a plurality candidate cells with respect to said cell reselection of a mobile terminal; assigning, toward each of said plurality of candidate cells, a priority, wherein at least one candidate cell of the plurality of candidate cells does not support priority based cell reselection; and providing said priorities to said mobile terminal.
摘要:
The invention relates to a method for improving the quality of control signalling based on signalling messages controlling speech or data transmission over an air interface between at least two radio terminals of a radio communications system, said speech or data being transmitted in at least one traffic channel of said radio communications system, and said signalling messages being transmitted in control channels associated with said at least one traffic channel. In order to allow for an improved performance of SACCH and FACCH, a first and a second signalling message with identical content are transmitted in two separate associated control channels. Alternatively, a signalling message included in a single ACCH is coded with a stronger coding. The invention relates equally to corresponding radio terminals and modules for such units.
摘要:
The invention relates to a data transmission in a digital mobile communication system. In a mobile communication system employing a so-called multi-channel access technique, one or more traffic channels may be allocated to a mobile station (MS) for data transfer, in accordance with the data transfer rate required by the application using the mobile station. In the invention, a data call is determined minimum and maximum requirements for the data transfer rate of the user data. The mobile communication network (BSS, MSC) dynamically adjusts (Handover CMD/Additional Assignment) the channel configuration assigned to the mobile station (MS) for the data call and consisting of one or more traffic channels, within the limits of said minimum and maximum requirements of the data channel, depending on the changing allocation state of the resources of the mobile communication network.
摘要:
The invention relates to a method for transmitting data for a multimedia broadcast/multicast service (MBMS) from a radio access network of a cellular communication network via a radio interface to mobile terminals located in a radio cell supplied by said radio access network. The radio access network transmits paging messages on a common control channel. It is proposed that a dedicated channel is employed for transmitting the MBMS data, which dedicated channel is allocated in a way that the mobile terminals are able to receive simultaneously paging messages and the MBMS data. The invention relates equally to a corresponding network entity, mobile terminal and communication system.
摘要:
Techniques are presented for repetition on both uplink and downlink Slow Associated Control Channel (SACCH) channels. For instance, an exemplary method is disclosed that is performed by a mobile node. The method includes receiving from a network node a first block of data over a downlink SACCH channel, and storing the first block of data. The method also includes, subsequent to receiving the first block of data, receiving from the network node a second block of data over the downlink SACCH channel. The method further includes attempting to decode the second block of data. The method additionally includes, in response to a failure in the attempt to decode the second block of data, combining into a combination the second block with the stored first block of data. The method also includes attempting to decode the combination.