US5517673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Systems and methods for cellular radiotelephone system access without system identification comparison
Assignee: Unwired Planet LLC
•
Filing: 1994-09-20
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Granted: 1996-05-14
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Expires: 2014-09-20
Abstract
Abstract A cellular radiotelephone system is accessed by a cellular radiotelephone without requiring System IDentification (SID) comparison during access. Access is performed by eliminating a rescan of Access Channels during access and using the Combined Paging and Access Channel which was identified during initialization for system access. Alternatively, the Access Channels may be rescanned upon an access request and a comparison of the Digital Color Code with the initially scanned channels is made. If the compared Digital Color Code matches, the identified channel is used for system access regardless of its SID.
Inventors
- 👤 Michael D. Fehnel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:44
CPC Classifications
H; H04; H04W; H04W48/00; H04W48/08; H04W48/12; H04W48/18
Claims Analysis
Total Claims: 52
Claim 1
Independent Claim
357 words
A method of accessing a cellular radiotelephone system by a cellular radiotelephone, said cellular radiotelephone system including a plurality of Dedicated Control Channels and a plurality of Combined Paging and Access Channels associated therewith, each Dedicated Control Channel and Combined Paging and Access Channel transmitting a System IDentification (SID) which is unique to said cellular radiotelephone system, each Combined Paging and Access Channel also transmitting a Digital Color Code (DCC), said accessing method comprising the steps of: identifying at least one Dedicated Control Channel having a predetermined System IDentification, prior to a required system access; identifying a plurality of first Combined Paging and Access Channels having said predetermined System IDentification, prior to a required system access; in response to a required system access, testing whether at least one of the first Combined Paging and Access Channels is useable for a system access; if the at least one of the first Combined Paging and Access channels is useable, using the at least one of the first Combined Paging and Access Channels to access the cellular radiotelephone system, without comparing the System IDentification transmitted by the at least one of the first Combined Paging and Access Channels with a System IDentification which is stored in said cellular radiotelephone; if the at least one of the first Combined Paging and Access Channels is unusable, identifying a plurality of second Combined Paging and Access Channels without comparing the System IDentification transmitted by the plurality of second Combined Paging and Access Channels with a System IDentification which is stored in said cellular radiotelephone; comparing the Digital Color Code of at least one of the plurality of second Combined Paging and Access Channels with the Digital Color Code of corresponding at least one of the plurality of first Combined Paging and Access Channels; and if the Digital Color Codes match, using the at least one of the second plurality of Combined Paging and Access Channels to access the cellular radiotelephone system, without comparing the System IDentification transmitted by the at least one of the second plurality of Combined Paging and Access Channels with a System IDentification which is stored in said cellular radiotelephone.
Claim 2
Independent Claim
357 words
A method of accessing a cellular radiotelephone system by a cellular radiotelephone, said cellular radiotelephone system including a plurality of Dedicated Control Channels and a plurality of Combined Paging and Access Channels associated therewith, each Dedicated Control Channel and Combined Paging and Access Channel transmitting a System IDentification (SID) which is unique to said cellular radiotelephone system, each Combined Paging and Access Channel also transmitting a Digital Color Code (DCC), said accessing method comprising the steps of: identifying at least one Dedicated Control Channel having a predetermined System IDentification, prior to a required system access; identifying a plurality of first Combined Paging and Access Channels having said predetermined System IDentification, prior to a required system access; in response to a required system access, testing whether at least one of the first Combined Paging and Access Channels is useable for a system access; if the at least one of the first Combined Paging and Access channels is useable, using the at least one of the first Combined Paging and Access Channels to access the cellular radiotelephone system, without comparing the System IDentification transmitted by the at least one of the first Combined Paging and Access Channels with a System IDentification which is stored in said cellular radiotelephone; if the at least one of the first Combined Paging and Access Channels is unusable, identifying a plurality of second Combined Paging and Access Channels without comparing the System IDentification transmitted by the plurality of second Combined Paging and Access Channels with a System IDentification which is stored in said cellular radiotelephone; comparing the Digital Color Code of at least one of the plurality of second Combined Paging and Access Channels with the Digital Color Code of corresponding at least one of the plurality of first Combined Paging and Access Channels; and if the Digital Color Codes match, using the at least one of the second plurality of Combined Paging and Access Channels to access the cellular radiotelephone system, without comparing the System IDentification transmitted by the at least one of the second plurality of Combined Paging and Access Channels with a System IDentification which is stored in said cellular radiotelephone.
Claim 3
Dependent Claim
38 words
A method according to claim 1 wherein said step of identifying a plurality of first Combined Paging and Access Channels comprises the step of identifying a first Combined Paging and Access Channel having a highest received signal strength.
Claim 4
Dependent Claim
51 words
A method according to claim 2 wherein said step of testing whether at least one of the first Combined Paging and Access Channels is useable for a system access comprises the step of testing whether the received signal strength of said first Combined Paging and Access Channel exceeds a predetermined threshold.
Claim 5
Dependent Claim
41 words
A method according to claim 3 wherein said step of using the at least one of the first Combined Paging and Access Channels comprises the step of using said first Combined Paging and Access Channel to access said cellular radiotelephone system.
Claim 6
Dependent Claim
45 words
A method according to claim 1 wherein said step of identifying a plurality of first Combined Paging and Access Channels comprises the step of identifying a plurality of first Combined Paging and Access Channels having highest received signal strength and having said predetermined System IDentification.
Claim 7
Dependent Claim
44 words
A method according to claim 5 wherein said step of identifying a plurality of second Combined Paging and Access Channels comprises the step of identifying a plurality of second Combined Paging and Access Channels having highest received signal strength, regardless of the System IDentification.
Claim 8
Dependent Claim
60 words
A method according to claim 6 wherein said step of comparing the Digital Color Code comprises the step of comparing the Digital Color Code of one of said plurality of second Combined Paging and Access Channels having highest received signal strength with the Digital Color Code of the corresponding one of the plurality of first Combined Paging and Access Channels.
Claim 9
Dependent Claim
64 words
A method according to claim 1 wherein said step of identifying a plurality of second Combined Paging and Access Channels comprises the step of storing at least some of said second plurality of second Combined Paging and Access Channels in an Access Table, in an order of decreasing received signal strength, along with the corresponding Digital Color Code and without the corresponding System IDentification.
Claim 10
Dependent Claim
16 words
A method according to claim 1 wherein said predetermined System IDentification comprises a Home System IDentification.
Claim 11
Independent Claim
153 words
A method of accessing a cellular radiotelephone system by a cellular radiotelephone, said cellular radiotelephone system including a plurality of Dedicated Control Channels and a plurality of Combined Paging and Access Channels associated therewith, each Dedicated Control Channel and Combined Paging and Access Channel transmitting a System IDentification which is unique to said cellular radiotelephone system, said accessing method comprising the steps of: identifying at least one Dedicated Control Channel having a predetermined System IDentification, prior to a required system access; identifying a plurality of Combined Paging and Access Channels having said predetermined System IDentification, prior to a required system access; and in response to a required system access, using one of the identified Combined Paging and Access Channels to access the cellular radiotelephone system, without comparing the System IDentification transmitted by the one of the identified Combined Paging and Access Channels with a System IDentification which is stored in said cellular radiotelephone.
Claim 12
Independent Claim
153 words
A method of accessing a cellular radiotelephone system by a cellular radiotelephone, said cellular radiotelephone system including a plurality of Dedicated Control Channels and a plurality of Combined Paging and Access Channels associated therewith, each Dedicated Control Channel and Combined Paging and Access Channel transmitting a System IDentification which is unique to said cellular radiotelephone system, said accessing method comprising the steps of: identifying at least one Dedicated Control Channel having a predetermined System IDentification, prior to a required system access; identifying a plurality of Combined Paging and Access Channels having said predetermined System IDentification, prior to a required system access; and in response to a required system access, using one of the identified Combined Paging and Access Channels to access the cellular radiotelephone system, without comparing the System IDentification transmitted by the one of the identified Combined Paging and Access Channels with a System IDentification which is stored in said cellular radiotelephone.
Claim 13
Dependent Claim
38 words
A method according to claim 10 wherein said step of identifying a plurality of first Combined Paging and Access Channels comprises the step of identifying a first Combined Paging and Access Channel having a highest received signal strength.
Claim 14
Dependent Claim
32 words
A method according to claim 11 wherein said testing step comprises the step of testing whether the received signal strength of said first Combined Paging and Access Channel exceeds a predetermined threshold.
Claim 15
Dependent Claim
41 words
A method according to claim 12 wherein said step of using the at least one of the first Combined Paging and Access Channels comprises the step of using said first Combined Paging and Access Channel to access said cellular radiotelephone system.
Claim 16
Independent Claim
229 words
A method of accessing a cellular radiotelephone system by a cellular radiotelephone, said cellular radiotelephone system including a plurality of Dedicated Control Channels and a plurality of Access Channels associated therewith, each Dedicated Control Channel and Access Channel transmitting a System IDentification (SID) which is unique to said cellular radiotelephone system, each Access Channel also transmitting a Digital Color Code (DCC), said accessing method comprising the steps of: identifying at least one Dedicated Control Channel having a predetermined System IDentification, prior to a required system access; identifying a plurality of first Access Channels having said predetermined System IDentification, prior to a required system access; in response to a required system access, identifying a plurality of second Access Channels without comparing the System IDentification transmitted by the plurality of second Access Channels with a System IDentification which is stored in said cellular radiotelephone; comparing the Digital Color Code of at least one of the plurality of second Access Channels with the Digital Color Code of corresponding at least one of the plurality of first Access Channels; and if the Digital Color Codes match, using the at least one of the second plurality of Access Channels to access the cellular radiotelephone system, without comparing the System IDentification transmitted by the at least one of the second plurality of Access Channels with a System IDentification which is stored in said cellular radiotelephone.
Claim 17
Independent Claim
229 words
A method of accessing a cellular radiotelephone system by a cellular radiotelephone, said cellular radiotelephone system including a plurality of Dedicated Control Channels and a plurality of Access Channels associated therewith, each Dedicated Control Channel and Access Channel transmitting a System IDentification (SID) which is unique to said cellular radiotelephone system, each Access Channel also transmitting a Digital Color Code (DCC), said accessing method comprising the steps of: identifying at least one Dedicated Control Channel having a predetermined System IDentification, prior to a required system access; identifying a plurality of first Access Channels having said predetermined System IDentification, prior to a required system access; in response to a required system access, identifying a plurality of second Access Channels without comparing the System IDentification transmitted by the plurality of second Access Channels with a System IDentification which is stored in said cellular radiotelephone; comparing the Digital Color Code of at least one of the plurality of second Access Channels with the Digital Color Code of corresponding at least one of the plurality of first Access Channels; and if the Digital Color Codes match, using the at least one of the second plurality of Access Channels to access the cellular radiotelephone system, without comparing the System IDentification transmitted by the at least one of the second plurality of Access Channels with a System IDentification which is stored in said cellular radiotelephone.
Claim 18
Dependent Claim
45 words
A method according to claim 14 wherein said step of identifying a plurality of first Combined Paging and Access Channels comprises the step of identifying a plurality of first Combined Paging and Access Channels having highest received signal strength and having said predetermined System IDentification.
Claim 19
Dependent Claim
44 words
A method according to claim 15 wherein said step of identifying a plurality of second Combined Paging and Access Channels comprises the step of identifying a plurality of second Combined Paging and Access Channels having highest received signal strength, regardless of the System IDentification.
Claim 20
Dependent Claim
60 words
A method according to claim 16 wherein said step of comparing the Digital Color Code comprises the step of comparing the Digital Color Code of one of said plurality of second Combined Paging and Access Channels having highest received signal strength with the Digital Color Code of the corresponding one of the plurality of first Combined Paging and Access Channels.
Claim 21
Dependent Claim
64 words
A method according to claim 17 wherein said step of identifying a plurality of second Combined Paging and Access Channels comprises the step of storing at least some of said second plurality of second Combined Paging and Access Channels in an Access Table, in an order of decreasing received signal strength, along with the corresponding Digital Color Code and without the corresponding System IDentification.
Claim 22
Dependent Claim
16 words
A method according to claim 14 wherein said predetermined System IDentification comprises a Home System IDentification.
Claim 23
Independent Claim
85 words
A method of accessing a cellular radiotelephone system by a cellular radiotelephone, said cellular radiotelephone system including a plurality of Access Channels, said accessing method comprising the steps of: initializing said cellular radiotelephone; waiting for a required system access; and in response to a required system access, accessing said cellular radiotelephone system using one of said plurality of Access Channels without comparing the System IDentification of said one of said plurality of Access Channels with a System IDentification which is stored in said cellular radiotelephone.
Claim 24
Independent Claim
85 words
A method of accessing a cellular radiotelephone system by a cellular radiotelephone, said cellular radiotelephone system including a plurality of Access Channels, said accessing method comprising the steps of: initializing said cellular radiotelephone; waiting for a required system access; and in response to a required system access, accessing said cellular radiotelephone system using one of said plurality of Access Channels without comparing the System IDentification of said one of said plurality of Access Channels with a System IDentification which is stored in said cellular radiotelephone.
Claim 25
Dependent Claim
39 words
A method according to claim 20 wherein said accessing step comprises the step of accessing the cellular radiotelephone system if the Digital Color Code of said one of said plurality of Access Channels is a predetermined Digital Color Code.
Claim 26
Dependent Claim
55 words
A method according to claim 20 wherein said waiting step comprises the step of waiting for a required system access via a predetermined Combined Paging and Access Channel, and wherein said step of accessing said cellular radiotelephone system comprises the step of accessing said cellular radiotelephone system using said predetermined Combined paging and Access Channel.
Claim 27
Dependent Claim
393 words
A cellular radiotelephone for accessing a cellular radiotelephone system, said cellular radiotelephone system including a plurality of Dedicated Control Channels and a plurality of Combined Paging and Access Channels associated therewith, each Dedicated Control Channel and Combined Paging and Access Channel transmitting a System IDentification (SID) which is unique to said cellular radiotelephone system, each Combined Paging and Access Channel also transmitting a Digital Color Code (DCC), said cellular radiotelephone comprising: means, responsive to activation of said cellular radiotelephone, for identifying at least one Dedicated Control Channel having a predetermined System IDentification; means, responsive to said Dedicated Control Channel identifying means, for identifying a plurality of first Combined Paging and Access Channels having said predetermined System IDentification; means, responsive to a required system access, for testing whether at least one of the first Combined Paging and Access Channels is useable for a system access; means, responsive to said testing means, for using the at least one of the first Combined Paging and Access Channels to access the cellular radiotelephone system, without comparing the System IDentification transmitted by the at least one of the first Combined Paging and Access Channels with a System IDentification which is stored in said cellular radiotelephone, if the at least one of the first Combined Paging and Access channels is useable; means, responsive to said testing means, for identifying a plurality of second Combined Paging and Access Channels without comparing the System IDentification transmitted by the plurality of second Combined Paging and Access Channels with a System IDentification which is stored in said cellular radiotelephone, if the at least one of the first Combined Paging and Access Channel is unusable; means, responsive to said second Combined Paging and Access Channels identifying means, for comparing the Digital Color Code of at least one of the plurality of second Combined Paging and Access Channels with the Digital Color Code of corresponding at least one of the plurality of first Combined Paging and Access Channels; and means, responsive to said comparing means, for using the at least one of the second plurality of Combined Paging and Access Channels to access the cellular radiotelephone system, without comparing the System IDentification transmitted by the at least one of the second plurality of Combined Paging and Access Channels with a System IDentification which is stored in said cellular radiotelephone, if the Digital Color Codes match.
Claim 28
Dependent Claim
393 words
A cellular radiotelephone for accessing a cellular radiotelephone system, said cellular radiotelephone system including a plurality of Dedicated Control Channels and a plurality of Combined Paging and Access Channels associated therewith, each Dedicated Control Channel and Combined Paging and Access Channel transmitting a System IDentification (SID) which is unique to said cellular radiotelephone system, each Combined Paging and Access Channel also transmitting a Digital Color Code (DCC), said cellular radiotelephone comprising: means, responsive to activation of said cellular radiotelephone, for identifying at least one Dedicated Control Channel having a predetermined System IDentification; means, responsive to said Dedicated Control Channel identifying means, for identifying a plurality of first Combined Paging and Access Channels having said predetermined System IDentification; means, responsive to a required system access, for testing whether at least one of the first Combined Paging and Access Channels is useable for a system access; means, responsive to said testing means, for using the at least one of the first Combined Paging and Access Channels to access the cellular radiotelephone system, without comparing the System IDentification transmitted by the at least one of the first Combined Paging and Access Channels with a System IDentification which is stored in said cellular radiotelephone, if the at least one of the first Combined Paging and Access channels is useable; means, responsive to said testing means, for identifying a plurality of second Combined Paging and Access Channels without comparing the System IDentification transmitted by the plurality of second Combined Paging and Access Channels with a System IDentification which is stored in said cellular radiotelephone, if the at least one of the first Combined Paging and Access Channel is unusable; means, responsive to said second Combined Paging and Access Channels identifying means, for comparing the Digital Color Code of at least one of the plurality of second Combined Paging and Access Channels with the Digital Color Code of corresponding at least one of the plurality of first Combined Paging and Access Channels; and means, responsive to said comparing means, for using the at least one of the second plurality of Combined Paging and Access Channels to access the cellular radiotelephone system, without comparing the System IDentification transmitted by the at least one of the second plurality of Combined Paging and Access Channels with a System IDentification which is stored in said cellular radiotelephone, if the Digital Color Codes match.
Claim 29
Dependent Claim
38 words
A cellular radiotelephone according to claim 23 wherein said means for identifying a plurality of first Combined Paging and Access Channels comprises means for identifying a first Combined Paging and Access Channel having a highest received signal strength.
Claim 30
Dependent Claim
32 words
A cellular radiotelephone according to claim 24 wherein said testing means comprises means for testing whether the received signal strength of said first Combined Paging and Access Channel exceeds a predetermined threshold.
Claim 31
Dependent Claim
41 words
A cellular radiotelephone according to claim 25 wherein said means for using the at least one of the first Combined Paging and Access Channels comprises means for using said first Combined Paging and Access Channel to access said cellular radiotelephone system.
Claim 32
Dependent Claim
45 words
A cellular radiotelephone according to claim 23 wherein said means for identifying a plurality of first Combined Paging and Access Channels comprises means for identifying a plurality of first Combined Paging and Access Channels having highest received signal strength and having said predetermined System IDentification.
Claim 33
Dependent Claim
44 words
A cellular radiotelephone according to claim 27 wherein said means for identifying a plurality of second Combined Paging and Access Channels comprises means for identifying a plurality of second Combined Paging and Access Channels having highest received signal strength, regardless of the System IDentification.
Claim 34
Dependent Claim
60 words
A cellular radiotelephone according to claim 28 wherein said means for comparing the Digital Color Code comprises means for comparing the Digital Color Code of one of said plurality of second Combined Paging and Access Channels having highest received signal strength with the Digital Color Code of the corresponding one of the plurality of first Combined Paging and Access Channels.
Claim 35
Dependent Claim
64 words
A cellular radiotelephone according to claim 23 wherein said means for identifying a plurality of second Combined Paging and Access Channels comprises means for storing at least some of said second plurality of second Combined Paging and Access Channels in an Access Table, in an order of decreasing received signal strength, along with the corresponding Digital Color Code and without the corresponding System IDentification.
Claim 36
Dependent Claim
17 words
A cellular radiotelephone according to claim 23 wherein said predetermined System IDentification comprises a Home System IDentification.
Claim 37
Dependent Claim
155 words
A cellular radiotelephone for accessing a cellular radiotelephone system, said cellular radiotelephone system including a plurality of Dedicated Control Channels and a plurality of Combined Paging and Access Channels associated therewith, each Dedicated Control Channel and Combined Paging and Access Channel transmitting a System IDentification which is unique to said cellular radiotelephone system, said cellular radiotelephone comprising: means, responsive to activation of said cellular radiotelephone, for identifying at least one Dedicated Control Channel having a predetermined System IDentification; means, responsive to said Dedicated Control Channel identifying means, for identifying a plurality of Combined Paging and Access Channels having said predetermined System IDentification; and means, responsive to a required system access, for using one of the identified Combined Paging and Access Channels to access the cellular radiotelephone system, without comparing the System IDentification transmitted by the one of the identified Combined Paging and Access Channels with a System IDentification which is stored in said cellular radiotelephone.
Claim 38
Dependent Claim
155 words
A cellular radiotelephone for accessing a cellular radiotelephone system, said cellular radiotelephone system including a plurality of Dedicated Control Channels and a plurality of Combined Paging and Access Channels associated therewith, each Dedicated Control Channel and Combined Paging and Access Channel transmitting a System IDentification which is unique to said cellular radiotelephone system, said cellular radiotelephone comprising: means, responsive to activation of said cellular radiotelephone, for identifying at least one Dedicated Control Channel having a predetermined System IDentification; means, responsive to said Dedicated Control Channel identifying means, for identifying a plurality of Combined Paging and Access Channels having said predetermined System IDentification; and means, responsive to a required system access, for using one of the identified Combined Paging and Access Channels to access the cellular radiotelephone system, without comparing the System IDentification transmitted by the one of the identified Combined Paging and Access Channels with a System IDentification which is stored in said cellular radiotelephone.
Claim 39
Dependent Claim
38 words
A cellular radiotelephone according to claim 32 wherein said means for identifying a plurality of first Combined Paging and Access Channels comprises means for identifying a first Combined Paging and Access Channel having a highest received signal strength.
Claim 40
Dependent Claim
32 words
A cellular radiotelephone according to claim 33 wherein said testing means comprises means for testing whether the received signal strength of said first Combined Paging and Access Channel exceeds a predetermined threshold.
Claim 41
Dependent Claim
41 words
A cellular radiotelephone according to claim 34 wherein said means for using the at least one of the first Combined Paging and Access Channels comprises means for using said first Combined Paging and Access Channel to access said cellular radiotelephone system.
Claim 42
Dependent Claim
251 words
A cellular radiotelephone for accessing a cellular radiotelephone system, said cellular radiotelephone system including a plurality of Dedicated Control Channels and a plurality of Access Channels associated therewith, each Dedicated Control Channel and Access Channel transmitting a System IDentification (SID) which is unique to said cellular radiotelephone system, each Access Channel also transmitting a Digital Color Code (DCC), said cellular radiotelephone comprising: means, responsive to activation of said cellular radiotelephone, for identifying at least one Dedicated Control Channel having a predetermined System IDentification; means, responsive to said Dedicated Control Channel identifying means, for identifying a plurality of first Access Channels having said predetermined System IDentification; means, responsive to a required system access, for identifying a plurality of second Access Channels without comparing the System IDentification transmitted by the plurality of second Access Channels with a System IDentification which is stored in said cellular radiotelephone; means, responsive to said second Combined Paging and Access Channels identifying means, for comparing the Digital Color Code of at least one of the plurality of second Access Channels with the Digital Color Code of corresponding at least one of the plurality of first Access Channels; and means, responsive to said comparing means, for using the at least one of the second plurality of Access Channels to access the cellular radiotelephone system, without comparing the System IDentification transmitted by the at least one of the second plurality of Access Channels with a System IDentification which is stored in said cellular radiotelephone, if the Digital Color Codes match.
Claim 43
Dependent Claim
251 words
A cellular radiotelephone for accessing a cellular radiotelephone system, said cellular radiotelephone system including a plurality of Dedicated Control Channels and a plurality of Access Channels associated therewith, each Dedicated Control Channel and Access Channel transmitting a System IDentification (SID) which is unique to said cellular radiotelephone system, each Access Channel also transmitting a Digital Color Code (DCC), said cellular radiotelephone comprising: means, responsive to activation of said cellular radiotelephone, for identifying at least one Dedicated Control Channel having a predetermined System IDentification; means, responsive to said Dedicated Control Channel identifying means, for identifying a plurality of first Access Channels having said predetermined System IDentification; means, responsive to a required system access, for identifying a plurality of second Access Channels without comparing the System IDentification transmitted by the plurality of second Access Channels with a System IDentification which is stored in said cellular radiotelephone; means, responsive to said second Combined Paging and Access Channels identifying means, for comparing the Digital Color Code of at least one of the plurality of second Access Channels with the Digital Color Code of corresponding at least one of the plurality of first Access Channels; and means, responsive to said comparing means, for using the at least one of the second plurality of Access Channels to access the cellular radiotelephone system, without comparing the System IDentification transmitted by the at least one of the second plurality of Access Channels with a System IDentification which is stored in said cellular radiotelephone, if the Digital Color Codes match.
Claim 44
Dependent Claim
45 words
A cellular radiotelephone according to claim 36 wherein said means for identifying a plurality of first Combined Paging and Access Channels comprises means for identifying a plurality of first Combined Paging and Access Channels having highest received signal strength and having said predetermined System IDentification.
Claim 45
Dependent Claim
44 words
A cellular radiotelephone according to claim 37 wherein said means for identifying a plurality of second Combined Paging and Access Channels comprises means for identifying a plurality of second Combined Paging and Access Channels having highest received signal strength, regardless of the System IDentification.
Claim 46
Dependent Claim
59 words
A cellular radiotelephone according to claim 38 wherein said means comparing the Digital Color Code comprises means for comparing the Digital Color Code of one of said plurality of second Combined Paging and Access Channels having highest received signal strength with the Digital Color Code of the corresponding one of the plurality of first Combined Paging and Access Channels.
Claim 47
Dependent Claim
64 words
A cellular radiotelephone according to claim 39 wherein said means for identifying a plurality of second Combined Paging and Access Channels comprises means for storing at least some of said second plurality of second Combined Paging and Access Channels in an Access Table, in an order of decreasing received signal strength, along with the corresponding Digital Color Code and without the corresponding System IDentification.
Claim 48
Dependent Claim
17 words
A cellular radiotelephone according to claim 36 wherein said predetermined System IDentification comprises a Home System IDentification.
Claim 49
Dependent Claim
87 words
A cellular radiotelephone for accessing a cellular radiotelephone system, said cellular radiotelephone system including a plurality of Access Channels, said cellular radiotelephone comprising: means for initializing said cellular radiotelephone; means, responsive to said initializing means, for waiting for a required system access; and means, responsive to a required system access, for accessing said cellular radiotelephone system using one of said plurality of Access Channels without comparing the System IDentification of said one of said plurality of Access Channels with a System IDentification stored in said cellular radiotelephone.
Claim 50
Dependent Claim
87 words
A cellular radiotelephone for accessing a cellular radiotelephone system, said cellular radiotelephone system including a plurality of Access Channels, said cellular radiotelephone comprising: means for initializing said cellular radiotelephone; means, responsive to said initializing means, for waiting for a required system access; and means, responsive to a required system access, for accessing said cellular radiotelephone system using one of said plurality of Access Channels without comparing the System IDentification of said one of said plurality of Access Channels with a System IDentification stored in said cellular radiotelephone.
Claim 51
Dependent Claim
39 words
A cellular radiotelephone according to claim 42 wherein said accessing means comprises means for accessing the cellular radiotelephone system if the Digital Color Code of said one of said plurality of Access Channels is a predetermined Digital Color Code.
Claim 52
Dependent Claim
54 words
A cellular radiotelephone according to claim 42 wherein said waiting means comprises means for waiting for a required system access via a predetermined Combined Paging and Access Channel, and wherein said means for accessing said cellular radiotelephone system comprises means for accessing said cellular radiotelephone system using said predetermined Combined paging and Access Channel.
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USPTO Annuity & Maintenance Windows
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| 7.5 Years (Year 8) | 2003-05-14 | 2003-11-13 | 2004-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-05-14 | 2007-11-13 | 2008-05-14 | $7700.00 | Window Closed / Lapsed |