Multi-band wireless cellular system and method
First Claim
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1. A system operative to optimize usage of wireless base stations servicing at least two operators, comprising:
- N wireless base stations deployed across a predetermined area, the wireless base stations operative to provide at least partial wireless cellular coverage in the predetermined area using a first radio band belonging to a first operator, wherein;
(i) at least K wireless base stations, out the N wireless base stations, are also operative to provide wireless cellular coverage using a second radio band located substantially in the 700 MHz to 1 GHz range belonging to a second operator, (ii) K<
N, and (iii) the first radio band is located in higher band than the second radio band, resulting in the second radio band having a better reach and better coverage than the first radio band, thereby allowing use of the second radio band in delivering at least a predetermined level of wireless cellular service to subscriber stations located substantially out of coverage area of the first radio band;
wherein the system is configured to enhance a level of wireless cellular service provided by the first operator, by causing subscriber stations associated with the first operator to roam into the second radio band when out of range of the first radio band.
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Abstract
A single wireless cellular system provides cellular service using first and second radio bands, belonging to two different Operators, respectively. The first radio band is located higher in frequency than the second radio band. Subscriber Stations, associated with either of the Operators, or with a third Operator, may perform partial roaming between the two bands within the single wireless cellular system, in order to optimize data throughputs, coverage, or both.
50 Citations
25 Claims
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1. A system operative to optimize usage of wireless base stations servicing at least two operators, comprising:
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N wireless base stations deployed across a predetermined area, the wireless base stations operative to provide at least partial wireless cellular coverage in the predetermined area using a first radio band belonging to a first operator, wherein;
(i) at least K wireless base stations, out the N wireless base stations, are also operative to provide wireless cellular coverage using a second radio band located substantially in the 700 MHz to 1 GHz range belonging to a second operator, (ii) K<
N, and (iii) the first radio band is located in higher band than the second radio band, resulting in the second radio band having a better reach and better coverage than the first radio band, thereby allowing use of the second radio band in delivering at least a predetermined level of wireless cellular service to subscriber stations located substantially out of coverage area of the first radio band;wherein the system is configured to enhance a level of wireless cellular service provided by the first operator, by causing subscriber stations associated with the first operator to roam into the second radio band when out of range of the first radio band. - View Dependent Claims (2, 3, 4)
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5. A method for supporting two-band wireless cellular operation by a single wireless cellular system servicing at least two operators, comprising:
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failing, by a wireless cellular system, to deliver a predetermined level of wireless cellular service to a subscriber station, via a first radio band located substantially in the 2.3 GHz to 2.6 GHz range belonging to a first operator associated with the subscriber station; locating, by the wireless cellular system, a second radio band located substantially in the 700 MHz to 1 GHz range belonging to a second operator, operative to deliver at least the predetermined level of wireless cellular service to the subscriber station as a result of the second radio band having a better coverage than the first radio band; and delivering, by the wireless cellular system, at least the predetermined level of wireless cellular service to the subscriber station, via the second radio band. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method for enhancing wireless cellular service provided by at least two operators, comprising:
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generating simultaneously a first radio access network and a second radio access network by a wireless cellular system, using a first and a second radio bands respectively, wherein said radio bands belonging to a first and a second operators respectively, and the first radio band is located in higher band than the second radio band located substantially in the 700 MHz to 1 GHz range, resulting in the second radio band having a better coverage than the first radio band, thereby allowing use of the second radio band in delivering at least a predetermined level of wireless cellular service to subscriber stations located substantially out of coverage area of the first radio band; and enhancing, by the wireless cellular system, a level of wireless cellular service provided by the first operator, by causing subscriber stations associated with the first operator and which are poorly covered by the first radio access network, to perform partial roaming from the first radio access network to the second radio access network. - View Dependent Claims (18, 19, 20, 21)
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22. A method for optimizing placement of wireless base stations servicing at least two operators, comprising:
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operating N wireless base stations deployed across a predetermined area, the wireless base stations operative to provide wireless cellular coverage in the predetermined area using a first radio band belonging to a first operator; providing wireless cellular coverage in the predetermined area using a second radio band located substantially in the 700 MHz to 1 GHz range belonging to a second operator, by configuring K wireless Base Stations, out of the N wireless base stations, to cover wirelessly the predetermined area using a second radio band belonging to a second operator, wherein K<
N, and the first radio band is located in higher band than the second radio band, resulting in the second radio band having a better coverage than the first radio band, thereby allowing use of the second radio band in delivering at least a predetermined level of wireless cellular service to subscriber stations located substantially out of coverage area of the first radio band; andenhancing a level of wireless cellular service provided by the first operator, by causing subscriber stations associated with the first operator to roam into the second radio band when out of range of the first radio band. - View Dependent Claims (23, 24, 25)
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Specification