Method and system for synchronization in communication system
AssigneeHuawei Technologies Co., Ltd.
InventorsBranislav Popovic, Oskar Mauritz
Life of this patent
Estimating the term…
Abstract
A method can be used for facilitating uplink synchronization between a first transceiver and a second transceiver within a cell in a multi-user cellular communication system. The first transceiver receives a signal for the uplink synchronization from the second transceiver. The signal includes a first signature sequence generated, at least in part, from a sequence with a zero-correlation zone. The first transceiver then performs a correlation of the signal for detection of the first signature sequence.
Claims30
A method for facilitating an uplink synchronization between a first transceiver and a second transceiver within a cell in a multi-user cellular communication system, the method comprising:
- receiving, by the first transceiver, a synchronization signal designated for the uplink synchronization, the synchronization signal being sent from the second transceiver over a random access channel, a first signature sequence being used in a preamble portion of the synchronization signal, and the first signature sequence being generated, at least in part, from a sequence with a zero-correlation zone, wherein the sequence with a zero-correlation zone is based on a Zadoff-Chu sequence, the Zadoff-Chu sequence being:
- a
-
- (
- k
- )
- =
- {
- W
- N
- k
- 2
- /
- 2
- +
- qk
- ,
- N
-
-
- even
- W
- N
- k
-
- (
- k
- +
- 1
- )
- /
- 2
- +
- qk
- ,
- N
-
-
- odd
- ,
-
- k
- =
- 0
- ,
- 1
- ,
- …
-
- ,
- N
- -
- 1
- ,
- where
-
-
- W
- N
- =
- exp
-
-
- (
- -
- j2
-
-
- π
-
-
- r
- /
- N
- )
- ,
- where r, q and N are integers, and r is relatively prime to N;
- and
- performing, by the first transceiver, a correlation of the synchronization signal, the correlation being designated for detection of the first signature sequence.
An apparatus, comprising:
- a transceiver, configured to receive a synchronization signal being sent from a second transceiver over a random access channel, wherein the synchronization signal is designated for a uplink synchronization between the second transceiver and the apparatus within a cell in a multi-user cellular communication system, a first signature sequence being used in a preamble portion of the synchronization signal, and the first signature sequence being generated, at least in part, from a sequence with a zero-correlation zone, wherein the sequence with a zero-correlation zone is based on a Zadoff-Chu sequence, the Zadoff-Chu sequence being:
- a
-
- (
- k
- )
- =
- {
- W
- N
- k
- 2
- /
- 2
- +
- qk
- ,
- N
-
-
- even
- W
- N
- k
-
- (
- k
- +
- 1
- )
- /
- 2
- +
- qk
- ,
- N
-
-
- odd
- ,
-
- k
- =
- 0
- ,
- 1
- ,
- …
-
- ,
- N
- -
- 1
- ,
- where
-
-
- W
- N
- =
- exp
-
-
- (
- -
- j2
-
-
- π
-
-
- r
- /
- N
- )
- ,
- where r, q and N are integers, and r is relatively prime to N;
- and
- a processor, configured to perform a correlation of the synchronization signal, the correlation being designated for detection of the first signature sequence.
An apparatus, comprising:
- a processor, configured to generate a first signature sequence, at least in part, from a sequence with a zero-correlation zone, wherein the sequence with a zero-correlation zone is based on a Zadoff-Chu sequence, the Zadoff-Chu sequence being:
- a
-
- (
- k
- )
- =
- {
- W
- N
- k
- 2
- /
- 2
- +
- qk
- ,
- N
-
-
- even
- W
- N
- k
-
- (
- k
- +
- 1
- )
- /
- 2
- +
- qk
- ,
- N
-
-
- odd
- ,
-
- k
- =
- 0
- ,
- 1
- ,
- …
-
- ,
- N
- -
- 1
- ,
- where
-
-
- W
- N
- =
- exp
-
-
- (
- -
- j2
-
-
- π
-
-
- r
- /
- N
- )
- ,
- where r, q and N are integers, and r is relatively prime to N;
- and
- a transceiver, configured to transmit a synchronization signal to a receiver over a random access channel, the first signature sequence being used in a preamble portion of the synchronization signal, and the synchronization signal being designated for an uplink synchronization between the apparatus and the receiver within a cell in a multi-user cellular communication system.
A communication system, comprising a first apparatus in communication with a second apparatus via a cell of the communication system, wherein the first apparatus comprising:
- a transceiver, configured to receive a synchronization signal being sent from the second apparatus over a random access channel, the signal being designated for an uplink synchronization between the first apparatus and the second apparatus, a first signature sequence being used in a preamble portion of the synchronization signal, and the first signature sequence being generated, at least in part, from a sequence with a zero-correlation zone, wherein the sequence with a zero-correlation zone is based on a Zadoff-Chu sequence, the Zadoff-Chu sequence being:
- a
-
- (
- k
- )
- =
- {
- W
- N
- k
- 2
- /
- 2
- +
- qk
- ,
- N
-
-
- even
- W
- N
- k
-
- (
- k
- +
- 1
- )
- /
- 2
- +
- qk
- ,
- N
-
-
- odd
- ,
-
- k
- =
- 0
- ,
- 1
- ,
- …
-
- ,
- N
- -
- 1
- ,
- where
-
-
- W
- N
- =
- exp
-
-
- (
- -
- j2
-
-
- π
-
-
- r
- /
- N
- )
- ,
- where r, q and N are integers, and r is relatively prime to N;
- and
- a processor, configured to perform a correlation of the synchronization signal, the correlation being designated for detection of the first signature sequence.
A communication system, comprising a first apparatus in communication with a second apparatus via a cell of the communication system, wherein the first apparatus comprises:
- a processor, configured to generate a first signature sequence, at least in part, from a sequence with a zero-correlation zone, wherein the first signature sequence is used in a preamble portion of a synchronization signal, and the sequence with a zero-correlation zone is based on a Zadoff-Chu sequence, the Zadoff-Chu sequence being:
- a
-
- (
- k
- )
- =
- {
- W
- N
- k
- 2
- /
- 2
- +
- qk
- ,
- N
-
-
- even
- W
- N
- k
-
- (
- k
- +
- 1
- )
- /
- 2
- +
- qk
- ,
- N
-
-
- odd
- ,
-
- k
- =
- 0
- ,
- 1
- ,
- …
- ,
- N
- -
- 1
- ,
- where
-
-
- W
- N
- =
- exp
-
-
- (
- -
- j2
-
-
- π
-
-
- r
- /
- N
- )
- ,
- where r, q and N are integers, and r is relatively prime to N;
- and
- a transceiver, configured to transmit the synchronization signal to the second apparatus over a random access channel, wherein the signal comprises the first signature sequence, and the signal is used for a uplink synchronization between the first apparatus and the second apparatus.
Dependencies are inferred from the claim text.