Preamble sequence for a random access channel
AssigneeEvolved Wireless LLC
InventorsYeong Hyeon Kwon, Seung Hee Han, Hyun Hwa Park, Dong Cheol Kim, Hyun Woo Lee, Min Seok Noh
Life of this patent
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Abstract
Disclosed is a data transmission method in a mobile communication system. The data transmission method through a code sequence in a mobile communication system includes grouping input data streams into a plurality of blocks consisting of at least one bit so as to map each block to a corresponding signature sequence, multiplying a signature sequence stream, to which the plurality of blocks are mapped, by a specific code sequence, and transmitting the signature sequence stream multiplied by the specific code sequence to a receiver.
Claims76
A user equipment (UE) to transmit a preamble sequence to a base station to at least improve detection performance comprising:
- a receiver within the user equipment that is configured to receive, from the base station and over a broadcast channel, position information of an allocated random access channel resource, the position information including frequency information and timing information, wherein the timing information indicates a subframe;
- and
- a transmitter within the user equipment that is configured to transmit, using the position information, on a random access channel, a preamble sequence using at least one 1 ms duration subframe to the base station to access a cellular network, wherein the preamble sequence has the form of a single cyclic prefix (CP) concatenated to a front-end of an N-time repetition, where N is an integer greater than 1, of the product of a Zadoff-Chu Constant Amplitude Zero Auto Correlation (CAZAC) based sequence with an exponential sequence, wherein the UE is configured to use frames for communication and each of the frames is divided into 1 ms duration subframes.
A method for a user equipment (UE) to transmit a preamble sequence to a base station to at least improve detection performance comprising:
- receiving, from the base station and over a broadcast channel, position information of an allocated random access channel resource, the position information including frequency information and timing information;
- and
- transmitting, using the position information, on a random access channel, a preamble sequence using at least one 1 ms duration subframe to the base station to access a cellular network, wherein the preamble sequence has the form of a single cyclic prefix (CP) concatenated to a front-end of an N-time repetition, where N is an integer greater than 1, of the product of a Zadoff-Chu Constant Amplitude Zero Auto Correlation (CAZAC) based sequence with an exponential sequence, wherein the user equipment uses frames for communication and each of the frames is divided into 1 ms duration subframes.
A user equipment (UE) to transmit a preamble sequence to a base station to at least improve detection performance comprising:
- a receiver within the user equipment that is configured to receive, from the base station and over a broadcast channel, position information of an allocated random access channel resource, the position information including frequency information and timing information, and reference signal information for use by the base station to determine channel quality information;
- and
- a transmitter within the user equipment that is configured to transmit a reference signal based on the reference signal information and to transmit, using the position information, on a random access channel, a preamble sequence to the base station to access a cellular network, wherein the preamble sequence has the form of a single cyclic prefix (CP) concatenated to a front-end of an N-time repetition, where N is an integer greater than 1, of the product of a Zadoff-Chu Constant Amplitude Zero Auto Correlation (CAZAC) based sequence with an exponential sequence.
A method for a user equipment (UE) to transmit a preamble sequence to a base station to at least improve detection performance comprising:
- receiving, from the base station and over a broadcast channel, position information of an allocated random access channel resource, the position information including frequency information and timing information, and reference signal information for use by the base station in determining channel quality information;
- and
- transmitting, using the position information, on a random access channel, a preamble sequence to the base station to access a cellular network, wherein the preamble sequence has the form of a single cyclic prefix (CP) concatenated to a front-end of an N-time repetition, where N is an integer greater than 1, of the product of a Zadoff-Chu Constant Amplitude Zero Auto Correlation (CAZAC) based sequence with an exponential sequence;
- and
- transmitting a reference signal based on the reference signal information.
Dependencies are inferred from the claim text.