EP0757500A2
Expired / Lapsed
EP
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Radio telephones and methods of operation
Assignee: Nokia Oyj
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Filing: 1996-07-24
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Granted: —
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Expires: 2016-07-24
Abstract
Abstract A method and apparatus for detecting additional base stations in a cellular radio telephone system in which communication channels are opened with a selected base station on a selected channel.
Inventors
- 👤 Nguyen Quan Tat
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 17:17
CPC Classifications
H; H04; H04W; H04W48/00; H04W48/16; H04W36/00; H04W36/08; H04W48/08; H04W48/12; H04W48/20
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
98 words
A radio handset for communication with a selected base station on a selected channel in a cellular radio telephone system in which a bearer is monitored to receive system information from a current base station, comprising processing means operative to cause identification of a base station with which to communicate on a selected channel in response to an indication that a channel on a base station other than a current base station is sought, by monitoring respective bearer channels until a bearer transmitted by a base station capable of allocating a communication channel to the handset is detected.
Claim 2
Dependent Claim
37 words
A radio handset according to claim 1 wherein a channel on a base station other than the current base station is sought if a new channel is needed and the current base station is at full capacity.
Claim 3
Dependent Claim
27 words
A radio handset according to claim 2 wherein the base station is capable of allocating a communication channel if it is not determined to be at capacity.
Claim 4
Dependent Claim
32 words
A radio handset according to claim 2 or 3 wherein a base station is determined to be at full capacity when the handset cannot open a communication channel with that base station.
Claim 5
Dependent Claim
47 words
A radio handset according to claim 3 or 4 wherein the identity of a base station at full capacity is noted and the identity of each identified base station is compared with the identities of noted base stations to determine if the base station is at capacity.
Claim 6
Dependent Claim
25 words
A radio handset according to claim 5 wherein the identity of a base station at full capacity is stored in a busy base station list.
Claim 7
Dependent Claim
16 words
A radio handset according to claim 6 wherein the busy base station list is erased periodically.
Claim 8
Dependent Claim
41 words
A radio handset according to any one of claims 5 to 7 wherein the handset stores the identity of a base station at full capacity in the form of identification information in a system information signal received from that base station.
Claim 9
Dependent Claim
25 words
A radio handset according to any preceding claim wherein the radio handset scans the bearer channels periodically to determine the signal strength of respective channels.
Claim 10
Dependent Claim
18 words
A radio handset according to claim 9 wherein the bearers are monitored sequentially in order of signal strength.
Claim 11
Dependent Claim
24 words
A radio handset according to claim 9 or 10 wherein periodic signal strength scans are suspended until monitoring of the bearer channels is complete.
Claim 12
Independent Claim
81 words
A method for communication between a handset and a selected base station on a selected channel in a cellular radio telephone system in which a bearer is monitored to receive system information from a current base station comprising, in response to an indication that a channel on a base station other than the current base station is sought, monitoring respective bearer channels until a bearer transmitted by a base station capable of allocating a communication channel to the handset is detected.
References Cited (Backward Citations)
No citation records indexed.
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