摘要:
The present invention proposes a method for data transmission in a cellular telecommunication system, in which system data are transmitted in units of bursts, each burst occupying a time slot (TS[j]) of one of consecutive frames (F[i]), each respective frame comprising a predetermined number (n) of time slots (TS[j]), j={(0, . . . , n−1}), and, within a single time slot (TS[j]) of each frame (F[i]), data can be transmitted between a first transceiver device (BS) and a respective one of a plurality of second transceiver devices (MS) in a first transmission direction (DL) from said first transceiver device (BS) to said respective second transceiver device (MS) or in a second transmission direction (UL) from said respective second transceiver device (MS) to said first transceiver device (BS), wherein during a first frame (F[i]) of consecutive frames respective second transceiver devices (MS) perform transmission with said first transceiver device (BS) during a time slot (TS[k]) assigned thereto for transmission, and during a subsequent second frame (F[l=1]) of said consecutive frames, respective second transceiver devices (MS) perform transmission with said first transceiver device (BS) during a different time slot (TS[1]) assigned thereto for transmission, with 0≦k, 1≦n−1 and k#1.
摘要:
A communications system where data blocks from a communications device are received at least in a serving site over a wireless interface. The serving site typically checks whether data blocks have been correctly received and sends acknowledgement information to the communications device accordingly. An assisting site may also receive the data blocks and send information indicating whether data blocks have been correctly received in the assisting site. In this case, the serving site may request erroneously received information from the assisting site. Alternatively, the assisting site may send information indicating erroneous reception of data blocks in response to noticing a data block sent by the communications device. As a further alternative, the assisting site may be synchronized with the data blocks sent by the communications device and send quality information relating to the wireless interface between the communications device and the assisting site to the serving site.
摘要:
A system for connecting a high-speed packet access (HSPA) user equipment to an Internet node. The system includes a HSPA user equipment, a base station node for receiving signals from the HSPA user equipment and an adapter, integrated in the base station node, wherein the adapter enables the HSPA user equipment to communicate to an Internet node.
摘要:
A method and an arrangement are provided for timing a change of diversity weights in a radio connection between a base station and a terminal. A response timing mode is selected from a number of predefined response timing modes. The terminal is informed about the selected response timing mode. An initiation is received from the terminal and it is responded to the initiation by changing certain diversity weights so that the exact moment of time for effecting the change is determined by the selected response timing mode.
摘要:
Method and system for generating higher order modulations with QPSK modulators. A complex sequence of binary digits is input to QPSK modulators. The binary digits are mapped to constellation points and multiplied with weighting coefficient. Constellation points of higher order modulation are mapped to inputs of the QPSK modulator, and, after modulation QPSK symbols are summed to compose symbols of higher order modulation.
摘要:
A method (100) and corresponding equipment, the method for enabling a Node B/base station (14) to distinguish different states—HARQ active states and a DTX (non-transmitting) state—of a UE (12) in respect to use of the feedback HSDPA (high-speed downlink packet access) channel HS-DPCCH over which the UE (12) sends acknowledgement messages (ACK/NACK) to the Node B (14) in response to receiving packets via the HSDPA (downlink) data channel HS-DPCH, the method including steps (41 42) in which the UE (12) additionally sends preamble symbols if an acknowledgement message (ACK/NACK) is to be sent in a next time interval but not in the current time interval, and at least one postamble symbol prior to the UE (12) entering the non-transmitting state (DTX).
摘要:
This invention relates to a method, a system, a base station, a base station hub (41) and software applications for data transmission between at least one base station (42-1, 42-2) and a radio network controller (40) in a radio access network, said method comprising operating a first-type physical layer protocol (46) for a transmission of said data between said at least one base station (42-1, 42-2) and a base station hub (41); operating a second-type physical layer protocol (47) for a transmission of said data between said base station hub (41) and said radio network controller (40); wherein said data comprises user data (340) that is transmitted between said radio network controller (40) and said at least one base station (42-1, 42-2) via said base station hub (41); and wherein said at least one base station (42-1, 42-2) performs at least base band processing for signals that are transmitted via a radio interface (7) and represent said user data (340).
摘要:
The idea of the invention is the allocation of transmission resources in several separate steps. In the first step, the available transmission resources are dynamically divided between the different networks. In the second step, the networks divide the resources that have been allocated for their use among their users by their own channel allocation methods. In one embodiment, a given minimum capacity wherewith the network achieves a predetermined minimum quality of service is permanently allocated to some or all of the networks. As the capacity requirement increases, the necessary amount of additional capacity is allocated to the operator in excess of this minimum capacity. The additional capacity is then allocated either from resources separately reserved for this purpose that are common to the networks, or by borrowing it from capacity that is allocated to another network but falls outside the minimum capacity of said network. In accordance with one embodiment, an upper limit is set for the transmission capacity allocated to a network, in excess of which no capacity can be allocated to the network. The dynamic distribution of capacity between networks can be realized either in a centralized or in a distributed manner. If the division is performed in a distributed manner for example in such a way that each network independently allocates a band to itself, the algorithms used in the different networks must be compatible.
摘要:
A method for controlling transmission power of a radio transmitter in a cellular communications system, such as in a CDMA-system, which includes determining a reference value (SIR.sub.m) indicating the quality of the signals received from the radiotransmitter, determining a reference value (P.sub.m, SIR.sub.pm) indicating the current traffic load in the radiocell, and commanding the radio transmitter to adjust transmission power. In order to improve speed and reliability during any traffic conditions the method includes comparing both the reference value (SIR.sub.m) for the quality of the received signals, and the reference value (P.sub.m, SIR.sub.pm) for the traffic load with predetermined target values (SIR.sub.t, P.sub.t, SIR.sub.pt), and practicing the commanding of the radio transmitter to adjust its transmission power depending on the result of the comparison.
摘要:
A connection establishment method for establishing a random access type connection using a random access channel, which is used in a radio system having several subscriber terminal equipments (37 to 38) and base stations (33 to 36) where one or more transceiver units (40 to 47) operate, and in which system connection establishment between one of the subscriber terminal equipments (37 to 38) and the base station (33 to 36) is possible when the one subscriber terminal equip nt (37 to 38) is situated in the coverage area of one or more transceiver units (40 to 47) of the base station, where the one subscriber terminal equipment (3 to 38) evaluates the quality of the connections to be established. Starting from a condition in which no connection is established with the one subscriber terminal equipment, the one subscriber terminal equipment (37 to 38) forms a random access type connection to more than one base station transceiver unit (40 to 47) included in one or more base stations (33 to 38).m