Method for controlling exchanges of frames between a control unit and at least one radio station, and control unit for implementing the method
First Claim
1. Method for controlling the transmission of frames from a control unit to at least one radio station, in which method each radio station has a respective receiving window associated with each frame, positioned in time according to a time marker inserted in the said frame by the control unit, in which method the frames include data frames, in which data frames the time marker is inserted by the control unit for synchronization with a radio terminal to which each radio station transmits data of the said data frames, and signalling frames, and in which method each radio station is arranged for indicating to the control unit a data frame received outside the associated receiving window, and for responding to a signalling frame by returning to the control unit a synchronization parameter representing a time of arrival of the said signalling frame with respect to the associated receiving window, the method including the following steps executed by the control unit in a period of transmission of successive data frames:
- transmission of signalling frames to each radio station simultaneously;
processing of the returned synchronization parameters; and
controlling the times of transmission of successive data frames according to the processed parameters.
2 Assignments
0 Petitions
Accused Products
Abstract
Each radio station (2) has a receiving window associated with each frame, positioned according to a time marker inserted in the said frame by a control unit (1). The frames include data frames (5), in which the time marker is inserted for synchronization with a radio terminal (4), and signalling frames. Each radio station indicates a data frame received outside the associated receiving window, and responds to a signalling frame by returning to the control unit a synchronization parameter representing a time of arrival of the said signalling frame. In a period of transmission of successive data frames: signalling frames are transmitted to each radio station simultaneously; returned synchronization parameters are processed; and times of transmission of successive data frames are controlled according to the processed parameters.
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Citations
39 Claims
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1. Method for controlling the transmission of frames from a control unit to at least one radio station, in which method each radio station has a respective receiving window associated with each frame, positioned in time according to a time marker inserted in the said frame by the control unit, in which method the frames include data frames, in which data frames the time marker is inserted by the control unit for synchronization with a radio terminal to which each radio station transmits data of the said data frames, and signalling frames, and in which method each radio station is arranged for indicating to the control unit a data frame received outside the associated receiving window, and for responding to a signalling frame by returning to the control unit a synchronization parameter representing a time of arrival of the said signalling frame with respect to the associated receiving window, the method including the following steps executed by the control unit in a period of transmission of successive data frames:
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transmission of signalling frames to each radio station simultaneously;
processing of the returned synchronization parameters; and
controlling the times of transmission of successive data frames according to the processed parameters. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. Method for controlling the reception and combination of frames at a control unit, the frames being transmitted from at least one radio station, in which method the control unit has a receiving window associated with each frame, positioned in time according to a time marker inserted in the said frame by each radio station, in which method the frames include data frames, in which data frames the time marker is inserted by each radio station for synchronization with a radio terminal transmitting data of the said data frames, in which method the control unit is arranged for detecting a data frame received outside the associated receiving window, and for determining a time of arrival of a data frame with respect to the associated receiving window, and in which method the control unit is arranged for combining data frames received from at least some of the radio stations and containing the same time marker, at a date of expiry of a respective timer, and this, date of expiry is positioned in time according to the associated receiving window, the method including the following steps executed by the control unit in a period of reception of successive data frames:
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processing of the determined times of arrival;
controlling the date of expiry of the timer according to the processed times of arrival. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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21. Control unit including means of transmission of frames to at least one radio station and means of insertion of a time marker in each frame, each radio station having a respective receiving window associated with each frame, positioned in time according to the said time marker, the transmitted frames including data frames, in which data frames the time marker is inserted for synchronization with a radio terminal to which each radio station transmits the data of the said data frames, and signalling frames, the receiving unit additionally including means for receiving from each radio station an indication of reception of a data frame outside the associated receiving window and means of receiving a synchronization parameter returned by a radio station in response to a signalling frame, the said synchronization parameter representing a time of arrival of the said signalling frame with respect to the associated receiving window, the control unit including:
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means for transmitting signalling frames to each radio station simultaneously, in a period of transmission of successive data frames;
means for processing the synchronization parameters returned; and
means for controlling the times of transmission of successive data frames according to processed parameters. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. Control unit including means for receiving and combining frames, the frames being transmitted from at least one radio station, the control unit having a receiving window associated with each frame, positioned in time according to a time marker inserted in the said frame by each radio station, the frames including data frames, in which data frames the time marker is inserted by each radio station for synchronization with a radio terminal transmitting data of the said data frames, the control unit having means for detecting a data frame received outside the associated receiving window, and for determining a time of arrival of a data frame with respect to the associated receiving window, the control unit additionally including means for combining data frames received from at least some of the radio stations and containing the same time marker, at a date of expiry of a respective timer, positioned in time according to the associated receiving window, the control unit also including:
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means for processing the determined times of arrival, in a period of reception of successive data frames;
means for controlling the date of expiry of the timer according to the processed times of arrival. - View Dependent Claims (34, 35, 36, 37, 38, 39)
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Specification