Uplink-downlink diversity for fast cell-site selection
First Claim
1. In a communications network having a plurality of sectors and a mobile station, a method for communication comprising:
- establishing a connection between the mobile station and a first sector by transmitting traffic from the first sector to the mobile station on a forward link and from the mobile station to the first sector on a reverse link;
detecting an available connection between the mobile station and a second sector; and
in response to the step of detecting the available connection, dividing the forward and reverse links of the connection between the first sector and the second sector wherein traffic on the forward link is transmitted from one of the first and second sectors and traffic on the reverse link is transmitted to the other sector.
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Accused Products
Abstract
The present invention is directed to forward link and reverse link diversity in a wireless telecommunications network. The present invention solves the reverse link/forward link dependence between a mobile station and a base station of a network by purposely selecting different base stations or sectors of a base station for reverse-link and forward-link transmissions. In one embodiment, reverse link traffic channel transmissions are targeted to a different base station than the base station from which the forward link traffic channel transmissions originate and respective control information of these channels are embedded or transmitted with the opposite link. Such diversity may be activated only in signal conditions that have a certain predefined value or mobile station locations that exhibit a sufficient chance of experiencing a forward or reverse link failure. Activation of the diversity scheme may also depend on whether more than one base station or sector has link-quality within an appropriate range or the degrading effect of the increased power on capacity is acceptable.
39 Citations
27 Claims
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1. In a communications network having a plurality of sectors and a mobile station, a method for communication comprising:
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establishing a connection between the mobile station and a first sector by transmitting traffic from the first sector to the mobile station on a forward link and from the mobile station to the first sector on a reverse link; detecting an available connection between the mobile station and a second sector; and in response to the step of detecting the available connection, dividing the forward and reverse links of the connection between the first sector and the second sector wherein traffic on the forward link is transmitted from one of the first and second sectors and traffic on the reverse link is transmitted to the other sector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A mobile station in a communications network having a plurality of sectors, the mobile station comprising:
a processor programmed for establishing a connection between the mobile station and a first sector by receiving traffic from the first sector to the mobile station on a forward link and by transmitting traffic from the mobile station to the first sector on a reverse link, detecting an available connection between the mobile station and a second sector and, in response to detecting the available connection, dividing the forward and reverse links of the connection between the first sector and the second sector wherein traffic on the forward link is received from one of the first and second sectors and traffic on the reverse link is transmitted to the other sector. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A communications network having a plurality of sectors and a mobile station, the network comprising:
a processor programmed for establishing a connection between the mobile station and a first sector by transmitting traffic from the first sector to the mobile station on a forward link and by receiving traffic from the mobile station to the first sector on a reverse link, detecting an available connection between the mobile station and a second sector and, in response to detecting the available connection, dividing the forward and reverse links of the connection between the first sector and the second sector wherein traffic on the forward link is transmitted from one of the first and second sectors and traffic on the reverse link is received by the other sector. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27)
Specification