Method and apparatus for wireless communication
First Claim
1. A method of transmitting wireless messages in a communications system having a plurality of transceiver units for receiving and onwardly transmitting wireless messages, wherein the system has a first mode, in which messages are transmitted from a first transmitter means to a target receiver means by sequential transmission via at least one said transceiver unit, and a second mode, the method comprising the steps of;
- when the system is in said second mode;
transmitting from a first transmitter means a said wireless message contain information identifying a target receiver means;
transmitting from said target receiver means an acknowledgement signal in response to receipt of said message by said target receiver means; and
causing at least one said transceiver unit to transmit said message if said transceiver unit or each said transceiver unit does not detect within a respective predetermined period said acknowledgement signal or transmission of said message by a predetermined other transceiver unit, wherein each said transceiver unit transmits said message after a respective delay depending upon the position of the said transceiver unit relative to the first transmitter means and target receiver means in order to communication in the first mode of the system.
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Abstract
A method of transmitting wireless messages in a communications system (201) having a plurality of transceiver units (203) for receiving and onwardly transmitting wireless messages is disclosed. In a first mode of the system, messages are transmitted from a first transmitter to a target receiver by sequential transmission via at least one transceiver unit (203). In a second mode, a wireless message containing information identifying a target receiver is transmitted from a first transmitter. The target receiver transmits an acknowledgement signal in response to receipt of the message, and at least one of the transceiver unit (203) transmits the message if that unit does not detect within a predetermined period the acknowledgement signal or transmission of the message by a predetermined other transceiver unit (203).
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Citations
15 Claims
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1. A method of transmitting wireless messages in a communications system having a plurality of transceiver units for receiving and onwardly transmitting wireless messages, wherein the system has a first mode, in which messages are transmitted from a first transmitter means to a target receiver means by sequential transmission via at least one said transceiver unit, and a second mode, the method comprising the steps of;
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when the system is in said second mode; transmitting from a first transmitter means a said wireless message contain information identifying a target receiver means; transmitting from said target receiver means an acknowledgement signal in response to receipt of said message by said target receiver means; and causing at least one said transceiver unit to transmit said message if said transceiver unit or each said transceiver unit does not detect within a respective predetermined period said acknowledgement signal or transmission of said message by a predetermined other transceiver unit, wherein each said transceiver unit transmits said message after a respective delay depending upon the position of the said transceiver unit relative to the first transmitter means and target receiver means in order to communication in the first mode of the system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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- 9. A communication system comprising a first transmitter means for transmitting a wireless message, and a plurality of transceiver units, each of which is adapted to receive said message from the first transmitter means and/or from another transceiver unit and transmit said message to a further transceiver unit, wherein the system has a first mode, in which messages are transmitted from a first transmitter means to a target receiver means by sequential transmission via at least one said transceiver unit, and a second mode in which a wireless message is to be transmitted to a target receiver means, said target receiver means is adapted to transmit an acknowledgement signal in response to receipt of said message, and at least one said transceiver unit directly receiving said message is adapted to transmit the message if said acknowledgement signal or transmission of said message by a predetermined further transceiver unit is not detected within a respective predetermined period, where each said transceiver unit transmits said message after a respective delay depending upon the position of the said transceiver unit relative to the first transmitter means and target receiver means in order of communication in the first mode of the system.
Specification