EP0663737A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Mobile to mobile radio communicationssystem
Assignee: Motorola Solutions UK Ltd
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Filing: 1994-12-15
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Granted: —
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Expires: 2014-12-15
Abstract
Abstract A method as shown in FIG. 3 for communicating in a TDMA communications system where a plurality of mobile stations communicate directly to one another without the benefit of infrastructure, according to a plan of communication (30) and using the same coding scheme, modulation scheme, and channel definitions as a main TDMA communications system involving mobile to mobile communication via radio infrastructure. The method includes transmitting a hailing message (26) including synchronisation information over the predetermined frequency from an initiating mobile station to at least one mobile station. In a preferred embodiment of the invention, the plan of communication includes frequency and time hopping.
Inventors
- 👤 Nicholas William Whinnett
- 👤 Anthony P. Van Den Heuvel
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 02:55
CPC Classifications
H; H04; H04W; H04W84/00; H04W84/02; H04W84/04; H04W84/08
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
110 words
A method for communicating in a TDMA communications system including a plurality of mobile stations that communicate directly to one another without the benefit of infrastructure using the same coding scheme, modulation scheme, and channel definitions as a main TDMA communications system involving mobile to mobile communication via radio infrastructure, the method for communicating comprising the steps of: transmitting a hailing message including synchronisation information over the predetermined frequency from an initiating mobile station to at least one mobile station; and monitoring a predetermined frequency by the at least one mobile station; identifying a plan of communication by one of the mobile stations for the mobile stations to communicate thereby.
Claim 2
Dependent Claim
28 words
The method of claim 1 wherein the step of transmitting a hailing message includes requesting communication with the at least one mobile station by the initiating mobile station.
Claim 3
Dependent Claim
21 words
The method of claim 2 further comprising the step of: acknowledging request for communication by the at least one mobile station.
Claim 4
Independent Claim
127 words
A method for communicating in a TDMA communications system including a plurality of mobile stations that communicate directly to one another without the benefit of infrastructure using the same coding scheme, modulation scheme and channel definitions as a main TDMA communications system involving mobile to mobile communication via radio infrastructure, the method for communicating comprising the steps of: transmitting synchronisation information over the predetermined frequency from a second mobile station to a first mobile station; monitoring a predetermined frequency by the first mobile station; requesting communication with the first mobile station by the second mobile station; acknowledging request for communication by the first mobile station; and identifying a plan of communication by one of the mobile stations for the first and second mobile station to communicate thereby.
Claim 5
Independent Claim
28 words
The method of any preceding claim wherein the predetermined frequency is a frequency known by the initiating mobile station as being associated with the first mobile station's identity.
Claim 6
Independent Claim
16 words
The method of any preceding claim wherein the plan of communication is a frequency hopping plan.
Claim 7
Independent Claim
17 words
The method of any preceding claim wherein the plan of communication is a time slot hopping plan.
Claim 8
Independent Claim
19 words
The method of any preceding claim wherein the frequency plan of communication comprises frequencies other than the predetermined frequency.
Claim 9
Independent Claim
30 words
The method of any preceding claim further comprising the step of monitoring signals from a system controller of the TDMA communication system by the mobile station monitoring the predetermined frequency.
Claim 10
Independent Claim
62 words
A method for communicating in a TDMA communications system including a plurality of mobile stations that communicate directly to one another without the benefit of infrastructure using the same coding scheme, modulation scheme and channel definitions as a main TDMA communications system involving mobile to mobile communication via radio infrastructure substantially as herein described with reference to FIG. 3 of the drawing.
References Cited (Backward Citations)
No citation records indexed.
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