Methods and Devices for Communicating Over a Radio Channel
AssigneeTelefonaktiebolaget L M Ericsson (publ)
InventorsRobert Baldemair, Richard Abrahamsson, David Astely
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Abstract
The invention relates to methods and communication devices for transmitting data on a radio channel comprising the steps of determining a first preamble format to be used in a cell of the second communication device, determining a basic cyclic shift value from a set of basic cyclic shift values, the set is selected based on the preamble format, and transmitting data comprising indication of the determined first preamble format and a basic cyclic shift value pointer indicating the basic cyclic shift value in the set of basic cyclic shift values.
Claims21
A method in a base station for transmitting data on a radio channel comprising the steps of:
- determining a first preamble format to be used in a cell of the base station, the method is characterized in
- determining a basic cyclic shift value from a set of basic cyclic shift values, the set to use is indicated by the preamble format, and
- transmitting data comprising indication of the determined first preamble format and a basic cyclic shift value pointer indicating the basic cyclic shift value in the set of basic cyclic shift values.
A base station comprising a control unit arranged to determine a first preamble format to be used in a cell of the base station and to determine a basic cyclic shift value from a set of basic cyclic shift values, wherein the set to use is indicated by the first preamble format and the base station further comprises a transmitting arrangement adapted to transmit data comprising indication of the determined first preamble format and a basic cyclic shift value pointer indicating the basic cyclic shift value in the set of basic cyclic shift values.
A method in a user equipment for processing a signal comprising the steps of:
- receiving data from a base station on a radio channel, the data comprises an indication of preamble format and a basic cyclic shift value pointer indicating the basic cyclic shift value to be used in a random access procedure,
- determining the preamble format from the received data, and
- selecting a basic cyclic shift value in a set of basic cyclic shift values, the set to use is indicated by the preamble format, based on the basic cyclic shift value pointer.
A user equipment comprising a receiving arrangement adapted to receive data comprising a basic cyclic shift value pointer indicating a basic cyclic shift value and an indication of a first preamble format from base station on a radio channel, wherein a control unit is arranged to determine a preamble format to be used in a random access procedure from the indication in the received data and to select a basic cyclic shift value in a set of basic cyclic shift values based on the basic cyclic shift value pointer, wherein the set to use is indicated by the preamble format.
Dependencies are inferred from the claim text.