摘要:
A base station (2a,2b,2c) which can communicate with radio terminals on common and dedicated channels according to specific speeds, is provided with a band-pass which is available according to the use of the common and dedicated channels in order to receive data from a radio terminal on a high-speed uplink channel. An available band-pass is determined in the base station in order to receive the data from at least one radio terminal (1) on at least one high-speed dedicated uplink channel. A first indication relating to the available band-pass is subsequently transmitted on a common downlink channel. At least one second indication relating to a percentage of the available band-pass which should not be exceeded by the radio terminal during a forthcoming transmission on said high-speed dedicated uplink channel is then transmitted independently for each radio terminal.
摘要:
The invention relates to a method for controlling transmission over a radio channel between a sending unit and a group of receiving units in a radio communication system, the method comprising the following steps relating to information aimed at a subgroup of at least one receiving unit of said group of receiving units: transmitting said information over the radio channel from the sending unit; upon reception of said information, transmitting an acknowledgement from at least each receiving unit of the subgroup, which has received said information correctly over said radio channel; and checking whether acknowledgments have been received by the sending unit from each receiving unit of said subgroup.
摘要:
The method makes it possible to locate a radio terminal able to communicate with a plurality of radio base stations associated with respective cells under the supervision of at least one radio network controller receiving data intended for locating the terminal, at least one of the cells comprising predetermined cell portions. The base station associated with this cell comprises means for estimating a cell portion where the radio terminal is situated and for focussing signals for communications with the radio terminal selectively in this estimated radio cell portion. The method comprises steps of transmitting from the base station associated with the cell to the radio network controller at least one parameter intended for the locating of the terminal and relating to the estimated cell portion, and locating the radio terminal as a function of at least this parameter relating to the estimated cell portion.
摘要:
A method and system for wireless frequency division multiple access communications in the uplink and/or downlink directions, having an improved pilot insertion scheme for single carrier based communications is provided. A first time duration for transmission of a data payload block (7) is established, and the transmission is processed using a first frequency domain or a time domain. A second time duration for transmission of at least one pilot block (70) is established, and the transmission is processed using a second frequency domain or the time domain, the second time duration (70) is not greater than the first time duration (7).
摘要:
A control method allocates to a base station, at a control member of the base station, a list of channels shared by several terminals containing several sets of shared channels. For a communication session between the base station and a specific terminal, the method indicates to the terminal the list of shared channels allocated to the base station. At the base station, the method selects for the terminal one of the sets of shared channels, and independently of the control member, indicates the selected set to the terminal via a dedicated channel.
摘要:
Spatial multiplexing and transmit diversity can improve the capacity of a wireless communication system. The system and method adapts communication schemes for communication systems with multiple antennas utilizing at least two transmission modes. The at least two transmission modes can, but are not necessarily, used for uplink communications. The two transmission modes may be chosen from the group consisting of a single antenna mode, a diversity mode a spatial multiplexed mode and a mixed diversity and spatial multiplexed mode. The at least two transmission modes may involve adaptation among multiple transmitters. At least one receiver may indicate a transmission mode to be used by a transmitter for a subsequent transmission. A transmitter may determine a transmission mode to be used for a subsequent transmission. The transmission mode can be based on channel sounding.
摘要:
Apparatus and method for encoding and transmitting feedback information from a first network node to a second network node in a multi-carrier wireless telecommunications network. The first network node is operable to receive signals from the second network node on two or more reception carriers and transmit data to the second network node on one or more transmission carriers. Each reception carrier being transmitted within an associated a radio band. The method comprises the steps of: (i) monitoring for a signal on at least two of the reception carriers; (ii) generating feedback information for at least two of the reception carriers based upon received signals; (iii) grouping the feedback information for reception carriers being transmitted within the same radio band; and encoding said grouped feedback information for two or more reception carriers being transmitted within the same radio band; and iv) transmitting the encoded feedback information to the second network node on one or more transmission carriers.
摘要:
Physical layer structures and access schemes for use in such networks are described and in particular initial access channel (IACH) structures are proposed. A spectrum efficient downlink (DL) IACH design supports different types of User Equipment (UE) capabilities and different system bandwidths. An IACH includes the synchronization channel (SCH) and broadcast-control channel (BCH). A non-uniform SCH for all system bandwidths is provided, as well as scalable bandwidth BCH depending on system bandwidth. An initial access procedure is provided, as well as an access procedure.
摘要:
The method makes it possible to locate a radio terminal able to communicate with a plurality of radio base stations associated with respective cells under the supervision of at least one radio network controller receiving data intended for locating the terminal, at least one of the cells comprising predetermined cell portions. The base station associated with this cell comprises means for estimating a cell portion where the radio terminal is situated and for focussing signals for communications with the radio terminal selectively in this estimated radio cell portion. The method comprises steps of transmitting from the base station associated with the cell to the radio network controller at least one parameter intended for the locating of the terminal and relating to the estimated cell portion, and locating the radio terminal as a function of at least this parameter relating to the estimated cell portion.
摘要:
The digital symbols of a sequence are assigned to respective positions in successive timeslots, according to a predetermined slot format. In a plurality of timeslots, a symbol of the sequence is replaced by a substitution symbol carrying additional information. A signal representing the sequence of symbols, which is divided into the timeslots, is transmitted on a communication channel. The production of the sequence includes an interleaving having an interleaving period longer than a timeslot, generally performed after a channel coding. The position of the substitution symbols in the timeslots which include them is varied, in order to optimize the performances of the transmission chain.