TIME AND FREQUENCY ACQUISITION AND TRACKING FOR OFDMA WIRELESS SYSTEMS
First Claim
1. A method for wireless communication with a serving base station in presence of interference from an interfering base station, the method comprising:
- acquiring a reference signal from the interfering base station;
obtaining a timing reference from the acquired reference signal of the interfering base station; and
communicating with the serving base station based on the timing reference from the interfering base station.
1 Assignment
0 Petitions
Accused Products
Abstract
Obtaining a timing reference in wireless communication is facilitated when desiring to communicate with a weak serving base station (such as an evolved NodeB) in the presence of a stronger interfering base station. The user equipment (UE) may track a stronger interfering base station'"'"'s timing, or the UE may track a timing that is derived by a composite power delay profile (PDP) from multiple base stations. The composite PDP may be constructed by adjusting individual base station PDPs according to a weighting scheme. The timing obtained in such a manner may be used for estimation of the channel of the interfering base station and cancelling interfering signals from the base station. It may also be used to estimate the channel of the serving base station after adding a backoff. The UE may track a stronger interfering base station'"'"'s frequency, or the UE may track a composite frequency.
-
Citations
20 Claims
-
1. A method for wireless communication with a serving base station in presence of interference from an interfering base station, the method comprising:
-
acquiring a reference signal from the interfering base station; obtaining a timing reference from the acquired reference signal of the interfering base station; and communicating with the serving base station based on the timing reference from the interfering base station. - View Dependent Claims (2, 3)
-
-
4. An apparatus for wireless communication with a serving base station in presence of interference from an interfering base station, the apparatus comprising:
-
means for acquiring a reference signal from the interfering base station; means for obtaining a timing reference from the acquired reference signal of the interfering base station; and means for communicating with the serving base station based on the timing reference from the interfering base station. - View Dependent Claims (5, 6)
-
-
7. A computer program product for wireless communication with a serving base station in presence of interference from an interfering base station, the computer program product comprising:
a computer-readable medium comprising code for; acquiring a reference signal from the interfering base station; obtaining a timing reference from the acquired reference signal of the interfering base station; and communicating with the serving base station based on the timing reference from the interfering base station. - View Dependent Claims (8)
-
9. An apparatus operable for wireless communication with a serving base station in presence of interference from an interfering base station, the apparatus comprising:
-
at least one processor; and a memory coupled to the at least one processor, wherein the at least one processor is configured; to acquire a reference signal from the interfering base station; to obtain a timing reference from the acquired reference signal of the interfering base station; and to communicate with the serving base station based on the timing reference from the interfering base station. - View Dependent Claims (10)
-
-
11. A method for wireless communication with a serving base station in presence of interference from a strong interfering base station, the method comprising:
-
acquiring a first reference signal from the strong interfering base station; obtaining a first frequency reference from the first reference signal; and communicating with the serving base station based on the first frequency reference from the interfering base station. - View Dependent Claims (12, 13)
-
-
14. An apparatus for wireless communication with a serving base station in presence of interference from a strong interfering base station, the apparatus comprising:
-
means for acquiring a first reference signal from the strong interfering base station; means for obtaining a first frequency reference from the first reference signal; and means for communicating with the serving base station based on the first frequency reference from the interfering base station. - View Dependent Claims (15, 16)
-
-
17. A computer program product for wireless communication with a serving base station in presence of interference from a strong interfering base station, the computer program product comprising:
a computer-readable medium comprising code for; acquiring a first reference signal from the strong interfering base station; obtaining a first frequency reference from the first reference signal; and communicating with the serving base station based on the first frequency reference from the interfering base station. - View Dependent Claims (18)
-
19. An apparatus for wireless communication with a serving base station in presence of interference from a strong interfering base station, the apparatus comprising:
-
at least one processor; and a memory coupled to the at least one processor, wherein the at least one processor is configured; to acquire a first reference signal from the strong interfering base station; to obtain a first frequency reference from the first reference signal; and to communicate with the serving base station based on the first frequency reference from the interfering base station. - View Dependent Claims (20)
-
Specification