Abstract: The invention provides a method and apparatus for providing signaling in a communication link to a sending node and a receiving node using the hybrid automatic repeat request (HARQ) protocol. The invention is characterized by the fact that the signalling contains a predetermined bit pattern that indicates whether control information in the current transmission can be used alone for decoding, or whether some part of the control information from an earlier transmission must also be used. The basic idea is to inform only with one bit (‘TFCI flag’), whether the TFCI bits can be used for decoding the transport channel, using HARQ. If this bit is logical “1”, then it means that current TFCI can be used for decoding, i.e. that the number of information bits for this transport format equals the number that is defined also originally when TFCI has been defined.

Abstract: A method of mapping internet protocol (IP) based data and signalling data for a forming a single connection between a mobile handsets in a code division multiple access (CDMA) system. Two or more sets of physical channels are used, in which each of the physical channels in each set has the same spreading factor as other physical channels in that set. The IP-based data including header data and application data, each of the header data, signalling data and application data are assigned to at least one transport channel (“TrCH”). At least a first one of the transport channels is mapped to a first one of the sets of physical channels. Simultaneously, at least a second one of the transport channels is mapped to a second one of the sets of physical channels.

Abstract: A method (600) for preparing an interfrequency handover of a certain communication connection from a first frequency to a second frequency features periodically intermitting (603) the transmission/receipt of data on the first frequency for certain transmission gaps. The number of transmission gaps is at least one during each transmission period and a certain sequence of transmission periods (420, 520) is used. Measurements are performed (607) on the second frequency during the transmission gaps on the first frequency. In the step of intermitting the transmission/receipt of data the transmission/receipt of data is intermitted within at least on transmission period for a certain transmission gap (311, 411) having a first duration and for a certain second transmission gap (312, 412) having a second duration. The second duration is different from the first duration. A mobile station (700), a network element (710) and a network control element (720) are also presented.

Abstract: The invention provides a method and apparatus for providing signaling in a communication link to a sending node and a receiving node using the hybrid automatic repeat request (HARQ) protocol. The invention is characterized by the fact that the signalling contains a predetermined bit pattern that indicates whether control information in the current transmission can be used alone for decoding, or whether some part of the control information from an earlier transmission must also be used. The basic idea is to inform only with one bit (‘TFCI flag’), whether the TFCI bits can be used for decoding the transport channel, using HARQ. If this bit is logical “1”, then it means that current TFCI can be used for decoding, i.e. that the number of information bits for this transport format equals the number that is defined also originally when TFCI has been defined.

Abstract: A system and method for random access channel (RACH) capture, where user equipment (UE) transmits a series of time-spaced access preambles each having an increasing power level to Node B and terminates access preamble transmission in response to an acquisition indicator (AI) signal returned from Node B and transmits its RACH message part. A collision detection preamble (CDP) is sent immediately after the message or embedded with the message. A collision detection indicator (CDI) signal matching the CDP is transmitted from Node B to the UE identified as having the failed RACH message requesting retransmission of the message. Optionally, the relative retransmission power level is also specified to the UE along with the CDI signal.

Abstract: A method and a communication system is disclosed. In the method a first station is provided with information associated with a code structure. Said code structure defines how a second station has arranged channelisation codes for transmission of data. Data is then transmitted from the second station. Reception of said data at the first station is initiated based on said information associated with the code structure. Further information associated with said transmission of data is signalled simultaneously with the transmission of said data from the second station.

Abstract: The invention relates to a receiver and a reception method in a data transmission system wherein a signal to be transmitted can comprise information that is transmitted in a frame form by using several different transport formats, in which frames also information on the transport format used is transmitted by means of transport format indicators, and in which system the information to be transmitted is coded by a coding depth depending on the properties of the information to be transmitted, at least some of the coding depths being multiples of a given basic coding depth Tk.

Abstract: A system and method for random access channel (RACH) capture, where user equipment (UE) transmits a series of time-spaced access preambles each having an increasing power level to Node B and terminates access preamble transmission in response to an acquisition indicator (AI) signal returned from Node B and transmits its RACH message part. A collision detection preamble (CDP) is sent immediately after the message or embedded with the message. A collision detection indicator (CDI) signal matching the CDP is transmitted from Node B to the UE identified as having the failed RACH message requesting retransmission of the message. Optionally, the relative retransmission power level is also specified to the UE along with the CDI signal.

Abstract: The invention relates to a method for selecting a way to perform a handover in a cellular radio system, and a cellular radio system employing code division multiple access. The system comprises in each cell at least one base station transmitting a pilot signal, and subscriber terminal equipments that may be connected to one or more base stations simultaneously, said terminal equipments comprising means for measuring pilot signals received by them, and comprising means for performing handovers of at least two types. For saving the capacity and the resources of the system, the terminal equipment of the system in accordance with the invention comprises means for selecting, on the basis of the pilot signals it has received, the handover technique which is used on the connection between the terminal equipment and the base station each time.

Abstract: A method of mapping internet protocol (IP) based data and signalling data for a forming a single connection between a mobile handsets in a code division multiple access (CDMA) system. Two or more sets of physical channels are used, in which each of the physical channels in each set has the same spreading factor as other physical channels in that set. The IP-based data including header data and application data, each of the header data, signalling data and application data are assigned to at least one transport channel (“TrCH”). At least a first one of the transport channels is mapped to a first one of the sets of physical channels. Simultaneously, at least a second one of the transport channels is mapped to a second one of the sets of physical channels.

Abstract: The invention relates to a method for selecting a way to perform a handover in a cellular radio system, and a cellular radio system employing code division multiple access. The system comprises in each cell at least one base station (100, 102) transmitting a pilot signal, and subscriber terminal equipments (110-118) that may be connected to one or more base stations simultaneously, said terminal equipments comprising means (320, 326) for measuring pilot signals received by them, and comprising means (320, 310) for performing handovers of at least two types. For saving the capacity and the resources of the system, the terminal equipment of the system in accordance with the invention comprises means (326) for selecting, on the basis of the pilot signals it has received, the handover technique which is used on the connection between the terminal equipment and the base station each time.

Abstract: A method (600) for preparing an interfrequency handover of a certain communication connection from a first frequency to a second frequency, comprises the following steps of: periodically intermitting (603) the transmission/receipt of data on the first frequency for certain transmission gaps, where the number of transmission gaps is at least one during each transmission period and a certain sequence of transmission periods (420, 520) is used, and performing (607) measurements on the second frequency during the transmission gaps on the first frequency. In the step of intermitting the transmission/receipt of data the transmission/receipt of data is intermitted within at least one transmission period for a certain transmission gap (311, 411) having a first duration and for a certain second transmission gap (312, 412) having a second duration, which second duration is different from the first duration. A mobile station (700), a network element (710) and a network control element (720) are also presented.

Abstract: A method and system for transmitting a pilot signal in a cellular radio system which includes a plurality of subscriber terminal equipments and at least one base station, each subscriber terminal equipment being connectable to the base station via a channel, the base station transmitting a pilot signal that is receivable by the subscriber terminal equipments, a load being formed at least by the subscriber terminal equipments that are presently connected to the base station, and each subscriber terminal equipment that is connected to the base station having an active group list that includes the base station. The load in the system is measured to produce a measured load result; and transmission of the pilot signal is halted at least periodically when the measured load result is greater than a set limit value.

Abstract: The present invention relates to a connection establishment method and a radio system. When a base station (11) detects a preamble (20) from a subscriber terminal equipment (13), the power adjustment of a closed loop is started for controlling the transmission power of the subscriber terminal equipment (13). Signals (15) of the base station (11) and the subscriber terminal equipment (13) are synchronized and the subscriber terminal equipment (13) sends a randomly selected identifier. The identifier determines a transit channel to which the subscriber terminal equipment (13) suggests to move. The base station (11) may change the suggested transit channel and echo the identifier back to the subscriber terminal equipment (13), and the base station (11) and the subscriber terminal equipment (13) communicate on the transit channel from which they move to a traffic channel. The inventive method accelerates connection establishment.

Abstract: According to the invention, when detecting the same DTMF signal at the transmitting end, successive DTMF frames relating to this signal are established. These frames are modified SID frames, and individual linking information (Order, Start, Duration) is added to each frame in addition to DTMF signal frequence pair information. This linking information indicates the duration of the DTMF signal from the first detection time period of the first modifiedd SID frame to the frame concerned, including said frame. The individual linking information thus interlinks successive DTMF frames (frames 1-4) relating to the same DTMF signal. At the receiving end, in receiving DTMF frames, it is calculated at each error-free frame how long the DTMF signal has been received.