# US 10,375,734 B2 · Mobile station apparatus, base station apparatus, wireless communication method, and integrated circuit > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,375,734 B2 - Document ID: US10375734B2 - Status: Granted - Kind: B2 - Application number: 14/349,371 - Filed: 2012-09-24 - Published: 2014-09-04 - Granted: 2019-08-06 - Earliest claimed: 2011-10-04 - Assignees: Sharp Kabushiki Kaisha - Applicants: Sharp Kabushiki Kaisha - Inventors: Shoichi Suzuki; Kimihiko Imamura; Tatsushi Aiba; Wataru Ouchi - Web page: https://patentgrep.com/patent/US10375734B2 ## CPC - H04J 13/22: Allocation of codes with a zero correlation zone - H04J 13/0062: {Zadoff-Chu} - H04W 74/0833: Random access procedures, e.g. with 4-step access - H04J: MULTIPLEX COMMUNICATION (transmission in general H04B; peculiar to transmission of digital information H04L5/00; systems for the simultaneous or sequential transmission of more than one television signal H04N7/08; in exchanges H04Q11/00; stereophonic systems H04S) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract To make a mobile station apparatus efficiently generate a base sequence. In a mobile station apparatus that generates a sequence for a demodulation reference signal on the basis of at least a sequence group number and transmits to a base station apparatus the demodulation reference signal together with a physical uplink shared channel used for transmission of a transport block, the mobile station apparatus receives information indicating a value of a parameter relating to the sequence from the base station apparatus, and determines the sequence group number without using the value of the parameter in a case where the mobile station apparatus performs transmission of the transport block on the physical uplink shared channel as part of a contention based random access procedure. ## Claims ### Claim 1 A mobile station apparatus comprising: reception circuitry configured to receive, by using a higher layer message, information indicative of a first parameter for generation of a base sequence, wherein a demodulation reference signal is given by a cyclic shift and the base sequence, and the demodulation reference signal is associated with transmission of a physical uplink shared channel, and generation circuitry configured to: generate the base sequence which is given by a qth root Zadoff-Chu sequence in a case that a length of the demodulation reference signal is equal to or larger than 36, the number q being given by at least sequence group number; determine the sequence group number based on at least the first parameter in a case that the transmission of the physical uplink shared channel corresponds to neither a random access response grant as part of a contention based random access procedure nor retransmission of a transport block as part of the contention based random access procedure, and generate the demodulation reference signal based on the cyclic shift and the base sequence. ### Claim 2 (depends on 1) The mobile station apparatus according to claim 1, wherein the generation circuitry configured to determine the sequence group number without the first parameter in a case that the transmission of the physical uplink shared channel corresponds to the random access response grant as part of the contention based random access procedure, or the transmission of the physical uplink shared channel corresponds to the retransmission of the transport block as part of the contention based random access procedure. ### Claim 3 (depends on 1) The mobile station apparatus according to claim 1, wherein the transport block is identical to a transport block transmitted via the physical uplink shared channel corresponding to the random access response grant. ### Claim 4 (depends on 1) The mobile station apparatus according to claim 1, wherein the information is specific for the mobile station apparatus. ### Claim 5 (depends on 1) The mobile station apparatus according to claim 1, wherein the retransmission includes a retransmission which is scheduled by downlink control information with a temporary cell radio network temporary identifier, the downlink control information indicating a second parameter used to determine the cyclic shift. ### Claim 6 (depends on 1) The mobile station apparatus according to claim 1, wherein the generation circuitry is further configured to generate the qth root Zadoff-Chu sequence xq(0), . . . , xq(NZCRS−1) according to a following equation, and NZCRS is given by a largest prime number such that the NZCRS is smaller than the length of the demodulation reference signal x q ⁡ ( m ) = e - j ⁢ ⁢ π ⁢ ⁢ qm ⁢ ( m + 1 ) N ZC RS . ### Claim 7 A mobile station apparatus comprising: reception circuitry configured to receive, by using a higher layer message, information indicative of a first parameter for generation of a base sequence, wherein a demodulation reference signal is given by a cyclic shift and the base sequence, and the demodulation reference signal is associated with transmission of a physical uplink shared channel, and generation circuitry configured to: generate the base sequence which is given by a qth root Zadoff-Chu sequence in a case that a length of the demodulation reference signal is equal to or larger than 36, the number a being given by at least a sequence group number: determine the sequence group number without the first parameter in a case that the transmission of the physical uplink shared channel corresponds to a random access response grant as part of the contention based random access procedure or the transmission of the physical uplink shared channel corresponds to retransmission of a transport block as part of the contention based random access procedure, and generate the demodulation reference signal based on the cyclic shift and the base sequence. ### Claim 8 (depends on 7) The mobile station apparatus according to claim 7, wherein the information is specific for the mobile station apparatus. ### Claim 9 (depends on 7) The mobile station apparatus according to claim 7, wherein the retransmission includes a retransmission which is scheduled by downlink control information with a temporary cell radio network temporary identifier, the downlink control information indicating a second parameter used to determine the cyclic shift. ### Claim 10 (depends on 7) The mobile station apparatus according to claim 7, wherein the generation circuitry is further configured to generate the qth root Zadoff-Chu sequence xq(0), . . . , xq(NZCRS−1) according to a following equation, and NZCRS is given by a largest prime number such that the NZCRS is smaller than the length of the demodulation reference signal x q ⁡ ( m ) = e - j ⁢ ⁢ π ⁢ ⁢ qm ⁢ ( m + 1 ) N ZC RS . ### Claim 11 A base station apparatus comprising: transmission circuitry configured to transmit, by using a higher layer message, information indicative of a first parameter for generation of a base sequence, wherein a demodulation reference signal is given by a cyclic shift and the base sequence, and the demodulation reference signal is associated with a transmission of a physical uplink shared channel; and reception circuitry configured to demodulate the physical uplink shared channel based on at least the demodulation reference signal, wherein the base sequence of the demodulation reference signal is given by a qth root Zadoff-Chu sequence in a case that a length of the demodulation reference signal is equal to or larger than 36, the number q being given by at least a sequence group number, and the sequence group number is determined based on at least the first parameter in a case that the transmission of the physical uplink shared channel corresponds to neither a random access response grant as part of a contention based random access procedure nor retransmission of a transport block as part of the contention based random access procedure. ### Claim 12 (depends on 11) The base station apparatus according to claim 11, wherein the sequence group number is determined without the first parameter in a case that the transmission of the physical uplink shared channel corresponds to the random access response grant as part of the contention based random access procedure, or the transmission of the physical uplink shared channel corresponds to the retransmission of the transport block as part of the contention based random access procedure. ### Claim 13 (depends on 11) The base station apparatus according to claim 11, wherein the transport block is identical to a transport block transmitted via the physical uplink shared channel corresponding to the random access response grant. ### Claim 14 (depends on 11) The base station apparatus according to claim 11, wherein the information is specific for a mobile station apparatus. ### Claim 15 (depends on 11) The base station apparatus according to claim 11, wherein the retransmission includes a retransmission which is scheduled by downlink control information with a temporary cell radio network temporary identifier, the downlink control information indicating a second parameter used to determine the cyclic shift. ### Claim 16 (depends on 11) The base station apparatus according to claim 11, wherein the qth root Zadoff-Chu sequence xq(0), . . . , xq(NZCRS−1) is generated according to a following equation, and NZCRS is given by a largest prime number such that the NZCRS is smaller than the length of the demodulation reference signal x q ⁡ ( m ) = e - j ⁢ ⁢ π ⁢ ⁢ qm ⁢ ( m + 1 ) N ZC RS . ### Claim 17 A base station apparatus comprising: transmission circuitry configured to transmit, by using a higher layer message, information indicative of a first parameter for generation of a base sequence, wherein a demodulation reference signal is given by a cyclic shift and the base sequence, and the demodulation reference signal is associated with a transmission of a physical uplink shared channel; and reception circuitry configured to demodulate the physical uplink shared channel based on at least the demodulation reference signal, wherein the base sequence of the demodulation reference signal is given by a qth root Zadoff-Chu Sequence in a case that a length of the demodulation reference signal is equal to or larger than 36, the number q being given by at least a sequence group number, the sequence group number is determined without the first parameter in a case that the transmission of the physical uplink shared channel corresponds to a random access response grant as part of the contention based random access procedure or the transmission of the physical uplink shared channel corresponds to retransmission of a transport block as part of the contention based random access procedure. ### Claim 18 (depends on 17) The base station apparatus according to claim 17, wherein the information is specific for a mobile station apparatus. ### Claim 19 (depends on 17) The base station apparatus according to claim 17, wherein the retransmission includes a retransmission which is scheduled by downlink control information with a temporary cell radio network temporary identifier, the downlink control information indicating a second parameter used to determine the cyclic shift. ### Claim 20 (depends on 17) The base station apparatus according to claim 17, wherein the qth root Zadoff-Chu sequence xq(0), . . . , xq(NZCRS−1) is generated according to a following equation, and NZCRS is given by a largest prime number such that the NZCRS is smaller than the length of the demodulation reference signal x q ⁡ ( m ) = e - j ⁢ ⁢ π ⁢ ⁢ qm ⁢ ( m + 1 ) N ZC RS . ### Claim 21 A radio communication method used in a mobile station apparatus comprising: receiving, by using a higher layer message, information indicative of a first parameter for generation of a base sequence, wherein a demodulation reference signal is given by a cyclic shift and the base sequence, the demodulation reference signal is associated with transmission of a physical uplink shared channel, generating the base sequence which is given by a qth root Zadoff-Chu sequence in a case that a length of the demodulation reference signal is equal to or larger than 36, the number a being given by at least a sequence group number, determining the sequence group number based on at least the first parameter in a case that the transmission of the physical uplink shared channel corresponds to neither a random access response grant as part of a contention based random access procedure nor retransmission of a transport block as part of the contention based random access procedure, and generating the demodulation reference signal based on the cyclic shift and the base sequence. ### Claim 22 (depends on 21) The radio communication method used in a mobile station apparatus according to claim 21, wherein the retransmission includes a retransmission which is scheduled by downlink control information with a temporary cell radio network temporary identifier, the downlink control information indicating a second parameter used to determine the cyclic shift. ### Claim 23 A radio communication method used in a mobile station apparatus comprising: receiving, by using a higher layer message, information indicative of a first parameter for generation of a base sequence, wherein a demodulation reference signal is given by a cyclic shift and the base sequence, the demodulation reference signal is associated with transmission of a physical uplink shared channel, generating the base sequence which is given by a qth root Zadoff-Chu sequence in a case that a length of the demodulation reference signal is equal to or larger than 36, the number a being given by at least a sequence group number, determining the sequence group number without the first parameter in a case that the transmission of the physical uplink shared channel corresponds to a random access response grant as part of the contention based random access procedure or the transmission of the physical uplink shared channel corresponds to retransmission of a transport block as part of the contention based random access procedure, and generating the demodulation reference signal based on the cyclic shift and the base sequence. ### Claim 24 (depends on 23) The radio communication method used in a mobile station apparatus according to claim 23, wherein the retransmission includes a retransmission which is scheduled by downlink control information with a temporary cell radio network temporary identifier, the downlink control information indicating a second parameter used to determine the cyclic shift. ### Claim 25 A radio communication method used in a base station apparatus comprising: transmitting, by using a higher layer message, information indicative of a first parameter for generation of a base sequence, wherein a demodulation reference signal is given by a cyclic shift and the base sequence, and the demodulation reference signal is associated with a transmission of a physical uplink shared channel, and demodulating the physical uplink shared channel based on at least the demodulation reference signal, wherein the base sequence of the demodulation reference signal is given by a qth root Zadoff-Chu sequence in a case that a length of the demodulation reference signal is equal to or larger than 36, the number q being given at least a sequence group number, and the sequence group number is determined based on at least the first parameter in a case that the transmission of the physical uplink shared channel corresponds to neither a random access response grant as part of a contention based random access procedure nor retransmission of a transport block as part of the contention based random access procedure. ### Claim 26 (depends on 25) The radio communication method used in a base station apparatus according to claim 25, wherein the retransmission includes a retransmission which is scheduled by downlink control information with a temporary cell radio network temporary identifier, the downlink control information indicating a second parameter used to determine the cyclic shift. ### Claim 27 A radio communication method used in a base station apparatus comprising: transmitting, by using a higher layer message, information indicative of a first parameter for generation of a base sequence, wherein a demodulation reference signal is given by a cyclic shift and the base sequence, the demodulation reference signal is associated with a transmission of a physical uplink shared channel, and demodulating the physical uplink shared channel based on at least the demodulation reference signal, wherein the base sequence of the demodulation reference signal is given by a qth root Zadoff-Chu sequence in a case that a length of the demodulation reference signal is equal to or larger than 36, the number q being given by at least a sequence group number, and the sequence group number is determined without the first parameter in a case that the transmission of the physical uplink shared channel corresponds to a random access response grant as part of the contention based random access procedure or the transmission of the physical uplink shared channel corresponds to retransmission of a transport block as part of the contention based random access procedure. ### Claim 28 (depends on 27) The radio communication method used in a base station apparatus according to claim 27, wherein the retransmission includes a retransmission which is scheduled by downlink control information with a temporary cell radio network temporary identifier, the downlink control information indicating a second parameter used to determine the cyclic shift.